Merge branch 'master' into analysis_rework

bin/cache/engine.version

-d85ead8ec2556739924282e2b3f77ff077a45820
+86837edd4ecbe5d28f16a770dff40a239f5b40b7

examples/material_gallery/lib/demo/fitness_demo.dart

@@ -7,7 +7,6 @@ import 'dart:math' as math;
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_sprites/flutter_sprites.dart';
-import 'package:vector_math/vector_math_64.dart' as vec;
 
 ImageMap _images;
 SpriteSheet _sprites;
@@ -581,7 +580,7 @@ class _FireworksNode extends NodeWithSize {
       speedVar: 50.0,
       startSize: 1.0,
       startSizeVar: 0.5,
-      gravity: new vec.Vector2(0.0, 30.0),
+      gravity: const Offset(0.0, 30.0),
       colorSequence: new ColorSequence.fromStartAndEndColor(startColor, endColor)
     );
     system.position = new Point(randomDouble() * 1024.0, randomDouble() * 1024.0);

examples/material_gallery/.analysis_options → examples/stocks/.analysis_options

 analyzer:
   exclude:
-    - 'ios/.generated/**'
+    - 'lib/i18n/stock_messages_*.dart'

packages/flutter/lib/src/material/drop_down.dart

@@ -28,7 +28,6 @@ class _DropDownMenuPainter extends CustomPainter {
   _DropDownMenuPainter({
     Color color,
     int elevation,
-    this.buttonRect,
     this.selectedIndex,
     Animation<double> resize
   }) : color = color,
@@ -43,7 +42,6 @@ class _DropDownMenuPainter extends CustomPainter {
 
   final Color color;
   final int elevation;
-  final Rect buttonRect;
   final int selectedIndex;
   final Animation<double> resize;
 
@@ -52,12 +50,12 @@ class _DropDownMenuPainter extends CustomPainter {
   @override
   void paint(Canvas canvas, Size size) {
     final Tween<double> top = new Tween<double>(
-      begin: (selectedIndex * buttonRect.height + _kMenuVerticalPadding.top).clamp(0.0, size.height - buttonRect.height),
+      begin: (selectedIndex * _kMenuItemHeight + _kMenuVerticalPadding.top).clamp(0.0, size.height - _kMenuItemHeight),
       end: 0.0
     );
 
     final Tween<double> bottom = new Tween<double>(
-      begin: (top.begin + buttonRect.height).clamp(buttonRect.height, size.height),
+      begin: (top.begin + _kMenuItemHeight).clamp(_kMenuItemHeight, size.height),
       end: size.height
     );
 
@@ -68,7 +66,6 @@ class _DropDownMenuPainter extends CustomPainter {
   bool shouldRepaint(_DropDownMenuPainter oldPainter) {
     return oldPainter.color != color
         || oldPainter.elevation != elevation
-        || oldPainter.buttonRect != buttonRect
         || oldPainter.selectedIndex != selectedIndex
         || oldPainter.resize != resize;
   }
@@ -130,7 +127,6 @@ class _DropDownMenu<T> extends StatusTransitionWidget {
         painter: new _DropDownMenuPainter(
           color: Theme.of(context).canvasColor,
           elevation: route.elevation,
-          buttonRect: route.buttonRect,
           selectedIndex: route.selectedIndex,
           resize: new CurvedAnimation(
             parent: route.animation,
@@ -140,8 +136,9 @@ class _DropDownMenu<T> extends StatusTransitionWidget {
         ),
         child: new Material(
           type: MaterialType.transparency,
-          child: new Block(
+          child: new ScrollableList(
             padding: _kMenuVerticalPadding,
+            itemExtent: _kMenuItemHeight,
             children: children
           )
         )
@@ -162,10 +159,11 @@ class _DropDownMenuRouteLayout extends SingleChildLayoutDelegate {
     // the view height. This ensures a tappable area outside of the simple menu
     // with which to dismiss the menu.
     //   -- https://www.google.com/design/spec/components/menus.html#menus-simple-menus
-    final double maxHeight = math.max(0.0, constraints.maxHeight - 2 * buttonRect.height);
+    final double maxHeight = math.max(0.0, constraints.maxHeight - 2 * _kMenuItemHeight);
+    final double width = buttonRect.width;
     return new BoxConstraints(
-      minWidth: buttonRect.width,
-      maxWidth: buttonRect.width,
+      minWidth: width,
+      maxWidth: width,
       minHeight: 0.0,
       maxHeight: maxHeight
     );
@@ -173,14 +171,15 @@ class _DropDownMenuRouteLayout extends SingleChildLayoutDelegate {
 
   @override
   Offset getPositionForChild(Size size, Size childSize) {
-    double top = buttonRect.top - selectedIndex * buttonRect.height - _kMenuVerticalPadding.top;
-    double topPreferredLimit = buttonRect.height;
+    final double buttonTop = buttonRect.top;
+    double top = buttonTop - selectedIndex * _kMenuItemHeight - _kMenuVerticalPadding.top;
+    double topPreferredLimit = _kMenuItemHeight;
     if (top < topPreferredLimit)
-      top = math.min(buttonRect.top, topPreferredLimit);
+      top = math.min(buttonTop, topPreferredLimit);
     double bottom = top + childSize.height;
-    double bottomPreferredLimit = size.height - buttonRect.height;
+    double bottomPreferredLimit = size.height - _kMenuItemHeight;
     if (bottom > bottomPreferredLimit) {
-      bottom = math.max(buttonRect.bottom, bottomPreferredLimit);
+      bottom = math.max(buttonTop + _kMenuItemHeight, bottomPreferredLimit);
       top = bottom - childSize.height;
     }
     assert(top >= 0.0);
@@ -277,7 +276,7 @@ class DropDownMenuItem<T> extends StatelessWidget {
   Widget build(BuildContext context) {
     return new Container(
       height: _kMenuItemHeight,
-      padding: const EdgeInsets.only(left: 8.0, right: 8.0, top: _kTopMargin),
+      padding: const EdgeInsets.symmetric(horizontal: 8.0),
       child: new DefaultTextStyle(
         style: Theme.of(context).textTheme.subhead,
         child: new Baseline(
@@ -363,7 +362,7 @@ class DropDownButton<T> extends StatefulWidget {
 }
 
 class _DropDownButtonState<T> extends State<DropDownButton<T>> {
-  final GlobalKey indexedStackKey = new GlobalKey(debugLabel: 'DropDownButton.IndexedStack');
+  final GlobalKey _itemKey = new GlobalKey(debugLabel: 'DropDownButton item key');
 
   @override
   void initState() {
@@ -390,13 +389,13 @@ class _DropDownButtonState<T> extends State<DropDownButton<T>> {
   }
 
   void _handleTap() {
-    final RenderBox renderBox = indexedStackKey.currentContext.findRenderObject();
-    final Rect buttonRect = renderBox.localToGlobal(Point.origin) & renderBox.size;
+    final RenderBox itemBox = _itemKey.currentContext.findRenderObject();
+    final Rect itemRect = itemBox.localToGlobal(Point.origin) & itemBox.size;
     final Completer<_DropDownRouteResult<T>> completer = new Completer<_DropDownRouteResult<T>>();
     Navigator.push(context, new _DropDownRoute<T>(
       completer: completer,
       items: config.items,
-      buttonRect: _kMenuHorizontalPadding.inflateRect(buttonRect),
+      buttonRect: _kMenuHorizontalPadding.inflateRect(itemRect),
       selectedIndex: _selectedIndex,
       elevation: config.elevation
     ));
@@ -412,27 +411,27 @@ class _DropDownButtonState<T> extends State<DropDownButton<T>> {
   Widget build(BuildContext context) {
     assert(debugCheckHasMaterial(context));
     Widget result = new Row(
+      mainAxisAlignment: MainAxisAlignment.collapse,
       children: <Widget>[
+        // We use an IndexedStack to make sure we have enough width to show any
+        // possible item as the selected item without changing size.
         new IndexedStack(
           children: config.items,
-          key: indexedStackKey,
+          key: _itemKey,
           index: _selectedIndex,
           alignment: FractionalOffset.topCenter
         ),
-        new Container(
-          child: new Icon(icon: Icons.arrow_drop_down, size: 36.0),
-          padding: const EdgeInsets.only(top: _kTopMargin)
-        )
-      ],
-      mainAxisAlignment: MainAxisAlignment.collapse
+        new Icon(icon: Icons.arrow_drop_down, size: 36.0)
+      ]
     );
     if (DropDownButtonHideUnderline.at(context)) {
       result = new Padding(
-        padding: const EdgeInsets.only(bottom: _kBottomBorderHeight),
+        padding: const EdgeInsets.only(top: _kTopMargin, bottom: _kBottomBorderHeight),
         child: result
       );
     } else {
       result = new Container(
+        padding: const EdgeInsets.only(top: _kTopMargin),
         decoration: const BoxDecoration(border: _kDropDownUnderline),
         child: result
       );

packages/flutter/lib/src/widgets/performance_overlay.dart

@@ -7,6 +7,18 @@ import 'package:flutter/rendering.dart';
 import 'framework.dart';
 
 /// Displays performance statistics.
+///
+/// The overlay show two time series. The first shows how much time was required
+/// on this thread to produce each frame. The second shows how much time was
+/// required on the GPU thread to produce each frame. Ideally, both these values
+/// would be less than the total frame budget for the hardware on which the app
+/// is running. For example, if the hardware has a screen that updates at 60 Hz,
+/// each thread should ideally spend less than 16 ms producing each frame. This
+/// ideal condition is indicated by a green vertical line for each thread.
+///
+/// The simplest way to show the performance overlay is to set
+/// [MaterialApp.showPerformanceOverlay] or [WidgetsApp.showPerformanceOverlay]
+/// to `true`.
 class PerformanceOverlay extends LeafRenderObjectWidget {
   // TODO(abarth): We should have a page on the web site with a screenshot and
   // an explanation of all the various readouts.

packages/flutter/test/material/drop_down_test.dart

@@ -38,6 +38,14 @@ void main() {
     tester.pump();
     tester.pump(const Duration(seconds: 1)); // finish the menu animation
 
+    // We should have two copies of item 5, one in the menu and one in the
+    // button itself.
+    expect(find.text('5').evaluate().length, 2);
+
+    // We should only have one copy of item 19, which is in the button itself.
+    // The copy in the menu shouldn't be in the tree because it's off-screen.
+    expect(find.text('19').evaluate().length, 1);
+
     tester.tap(find.byConfig(button));
 
     // Ideally this would be 4 because the menu would be overscrolled to the

packages/flutter_sprites/lib/src/particle_system.dart

@@ -41,6 +41,49 @@ class _ParticleAccelerations {
 /// number of particles can never exceed the [maxParticles] limit.
 class ParticleSystem extends Node {
 
+  ParticleSystem(this.texture,
+                 {this.life: 1.5,
+                  this.lifeVar: 1.0,
+                  this.posVar: Point.origin,
+                  this.startSize: 2.5,
+                  this.startSizeVar: 0.5,
+                  this.endSize: 0.0,
+                  this.endSizeVar: 0.0,
+                  this.startRotation: 0.0,
+                  this.startRotationVar: 0.0,
+                  this.endRotation: 0.0,
+                  this.endRotationVar: 0.0,
+                  this.rotateToMovement : false,
+                  this.direction: 0.0,
+                  this.directionVar: 360.0,
+                  this.speed: 100.0,
+                  this.speedVar: 50.0,
+                  this.radialAcceleration: 0.0,
+                  this.radialAccelerationVar: 0.0,
+                  this.tangentialAcceleration: 0.0,
+                  this.tangentialAccelerationVar: 0.0,
+                  this.maxParticles: 100,
+                  this.emissionRate: 50.0,
+                  this.colorSequence,
+                  this.alphaVar: 0,
+                  this.redVar: 0,
+                  this.greenVar: 0,
+                  this.blueVar: 0,
+                  this.transferMode: TransferMode.plus,
+                  this.numParticlesToEmit: 0,
+                  this.autoRemoveOnFinish: true,
+                  Offset gravity
+  }) {
+    this.gravity = gravity;
+    _particles = new List<_Particle>();
+    _emitCounter = 0.0;
+    // _elapsedTime = 0.0;
+    if (_gravity == null)
+      _gravity = new Vector2.zero();
+    if (colorSequence == null)
+      colorSequence = new ColorSequence.fromStartAndEndColor(new Color(0xffffffff), new Color(0x00ffffff));
+  }
+
   /// The texture used to draw each individual sprite.
   Texture texture;
 
@@ -108,7 +151,21 @@ class ParticleSystem extends Node {
   double tangentialAccelerationVar;
 
   /// The gravity vector of the particle system.
-  Vector2 gravity;
+  Offset get gravity {
+    if (_gravity == null)
+      return null;
+
+    return new Offset(_gravity.x, _gravity.y);
+  }
+
+  Vector2 _gravity;
+
+  void set gravity(Offset gravity) {
+    if (gravity == null)
+      _gravity = null;
+    else
+      _gravity = new Vector2(gravity.dx, gravity.dy);
+  }
 
   /// The maximum number of particles the system can display at a single time.
   int maxParticles;
@@ -157,45 +214,6 @@ class ParticleSystem extends Node {
     ..filterQuality = FilterQuality.low
     ..isAntiAlias = false;
 
-  ParticleSystem(this.texture,
-                 {this.life: 1.5,
-                  this.lifeVar: 1.0,
-                  this.posVar: Point.origin,
-                  this.startSize: 2.5,
-                  this.startSizeVar: 0.5,
-                  this.endSize: 0.0,
-                  this.endSizeVar: 0.0,
-                  this.startRotation: 0.0,
-                  this.startRotationVar: 0.0,
-                  this.endRotation: 0.0,
-                  this.endRotationVar: 0.0,
-                  this.rotateToMovement : false,
-                  this.direction: 0.0,
-                  this.directionVar: 360.0,
-                  this.speed: 100.0,
-                  this.speedVar: 50.0,
-                  this.radialAcceleration: 0.0,
-                  this.radialAccelerationVar: 0.0,
-                  this.tangentialAcceleration: 0.0,
-                  this.tangentialAccelerationVar: 0.0,
-                  this.gravity,
-                  this.maxParticles: 100,
-                  this.emissionRate: 50.0,
-                  this.colorSequence,
-                  this.alphaVar: 0,
-                  this.redVar: 0,
-                  this.greenVar: 0,
-                  this.blueVar: 0,
-                  this.transferMode: TransferMode.plus,
-                  this.numParticlesToEmit: 0,
-                  this.autoRemoveOnFinish: true}) {
-    _particles = new List<_Particle>();
-    _emitCounter = 0.0;
-    // _elapsedTime = 0.0;
-    if (gravity == null) gravity = new Vector2.zero();
-    if (colorSequence == null) colorSequence = new ColorSequence.fromStartAndEndColor(new Color(0xffffffff), new Color(0x00ffffff));
-  }
-
   @override
   void update(double dt) {
     // TODO: Fix this (it's a temp fix for low framerates)
@@ -249,11 +267,11 @@ class ParticleSystem extends Node {
         tangential.scale(particle.accelerations.tangentialAccel);
 
         // (gravity + radial + tangential) * dt
-        Vector2 accel = (gravity + radial + tangential).scale(dt);
+        final Vector2 accel = (_gravity + radial + tangential).scale(dt);
         particle.dir += accel;
-      } else if (gravity[0] != 0.0 || gravity[1] != 0) {
+      } else if (_gravity[0] != 0.0 || _gravity[1] != 0) {
         // gravity
-        Vector2 accel = new Vector2.copy(gravity).scale(dt);
+        final Vector2 accel = new Vector2.copy(_gravity).scale(dt);
         particle.dir += accel;
       }
 
@@ -362,7 +380,8 @@ class ParticleSystem extends Node {
 
   @override
   void paint(Canvas canvas) {
-    if (opacity == 0.0) return;
+    if (opacity == 0.0)
+      return;
 
     List<RSTransform> transforms = <RSTransform>[];
     List<Rect> rects = <Rect>[];

packages/flutter_tools/lib/executable.dart

@@ -102,7 +102,7 @@ Future<Null> main(List<String> args) async {
 
       flutterUsage.sendException(error, chain);
 
-      if (Platform.environment.containsKey('FLUTTER_DEV')) {
+      if (Platform.environment.containsKey('FLUTTER_DEV') || isRunningOnBot) {
         // If we're working on the tools themselves, just print the stack trace.
         stderr.writeln('$error');
         stderr.writeln(chain.terse.toString());

packages/flutter_tools/lib/src/android/android_device.dart

@@ -49,23 +49,49 @@ class AndroidDevice extends Device {
   final String modelID;
   final String deviceCodeName;
 
+  Map<String, String> _properties;
   bool _isLocalEmulator;
+  TargetPlatform _platform;
+
+  String _getProperty(String name) {
+    if (_properties == null) {
+      String getpropOutput = runCheckedSync(adbCommandForDevice(<String>['shell', 'getprop']));
+      RegExp propertyExp = new RegExp(r'\[(.*?)\]: \[(.*?)\]');
+      _properties = <String, String>{};
+      for (Match m in propertyExp.allMatches(getpropOutput)) {
+        _properties[m.group(1)] = m.group(2);
+      }
+    }
+    return _properties[name];
+  }
 
   @override
   bool get isLocalEmulator {
     if (_isLocalEmulator == null) {
+      String characteristics = _getProperty('ro.build.characteristics');
+      _isLocalEmulator = characteristics != null && characteristics.contains('emulator');
+    }
+    return _isLocalEmulator;
+  }
+
+  @override
+  TargetPlatform get platform {
+    if (_platform == null) {
       // http://developer.android.com/ndk/guides/abis.html (x86, armeabi-v7a, ...)
-      try {
-        String value = runCheckedSync(adbCommandForDevice(
-          <String>['shell', 'getprop', 'ro.product.cpu.abi']
-        ));
-        _isLocalEmulator = value.startsWith('x86');
-      } catch (error) {
-        _isLocalEmulator = false;
+      switch (_getProperty('ro.product.cpu.abi')) {
+        case 'x86_64':
+          _platform = TargetPlatform.android_x64;
+          break;
+        case 'x86':
+          _platform = TargetPlatform.android_x86;
+          break;
+        default:
+          _platform = TargetPlatform.android_arm;
+          break;
       }
     }
 
-    return _isLocalEmulator;
+    return _platform;
   }
 
   _AdbLogReader _logReader;
@@ -123,9 +149,7 @@ class AndroidDevice extends Device {
       runCheckedSync(<String>[androidSdk.adbPath, 'start-server']);
 
       // Sample output: '22'
-      String sdkVersion = runCheckedSync(
-        adbCommandForDevice(<String>['shell', 'getprop', 'ro.build.version.sdk'])
-      ).trimRight();
+      String sdkVersion = _getProperty('ro.build.version.sdk');
 
       int sdkVersionParsed = int.parse(sdkVersion, onError: (String source) => null);
       if (sdkVersionParsed == null) {
@@ -333,9 +357,6 @@ class AndroidDevice extends Device {
     return runCommandAndStreamOutput(command).then((int exitCode) => exitCode == 0);
   }
 
-  @override
-  TargetPlatform get platform => isLocalEmulator ? TargetPlatform.android_x64 : TargetPlatform.android_arm;
-
   @override
   void clearLogs() {
     runSync(adbCommandForDevice(<String>['logcat', '-c']));

packages/flutter_tools/lib/src/application_package.dart

@@ -103,6 +103,7 @@ ApplicationPackage getApplicationPackageForPlatform(TargetPlatform platform) {
   switch (platform) {
     case TargetPlatform.android_arm:
     case TargetPlatform.android_x64:
+    case TargetPlatform.android_x86:
       return new AndroidApk.fromCurrentDirectory();
     case TargetPlatform.ios:
       return new IOSApp.fromCurrentDirectory();
@@ -122,6 +123,7 @@ class ApplicationPackageStore {
     switch (platform) {
       case TargetPlatform.android_arm:
       case TargetPlatform.android_x64:
+      case TargetPlatform.android_x86:
         android ??= new AndroidApk.fromCurrentDirectory();
         return android;
       case TargetPlatform.ios:

packages/flutter_tools/lib/src/base/utils.dart

@@ -8,6 +8,13 @@ import 'dart:io';
 import 'package:crypto/crypto.dart';
 import 'package:path/path.dart' as path;
 
+bool get isRunningOnBot {
+  // https://docs.travis-ci.com/user/environment-variables/#Default-Environment-Variables
+  return
+    Platform.environment['TRAVIS'] == 'true' ||
+    Platform.environment['CONTINUOUS_INTEGRATION'] == 'true';
+}
+
 String hex(List<int> bytes) {
   StringBuffer result = new StringBuffer();
   for (int part in bytes)

packages/flutter_tools/lib/src/build_configuration.dart

@@ -41,6 +41,7 @@ String getNameForHostPlatform(HostPlatform platform) {
 enum TargetPlatform {
   android_arm,
   android_x64,
+  android_x86,
   ios,
   darwin_x64,
   linux_x64

packages/flutter_tools/lib/src/cache.dart

@@ -192,7 +192,8 @@ class FlutterEngine {
       'android-arm',
       'android-arm-profile',
       'android-arm-release',
-      'android-x64'
+      'android-x64',
+      'android-x86',
     ];
 
     if (Platform.isMacOS)

packages/flutter_tools/lib/src/commands/analyze.dart

@@ -34,15 +34,8 @@ class AnalyzeCommand extends FlutterCommand {
     argParser.addFlag('watch', help: 'Run analysis continuously, watching the filesystem for changes.', negatable: false);
     argParser.addOption('dart-sdk', help: 'The path to the Dart SDK.', hide: true);
 
-    // Options to enable a benchmarking mode.
-    argParser.addFlag('benchmark',
-      negatable: false,
-      hide: true
-    );
-    argParser.addOption('benchmark-expected',
-      hide: true,
-      help: 'The time (in seconds) that the benchmark is expected to run.'
-    );
+    // Hidden option to enable a benchmarking mode.
+    argParser.addFlag('benchmark', negatable: false, hide: true);
 
     usesPubOption();
   }
@@ -393,19 +386,12 @@ class AnalyzeCommand extends FlutterCommand {
 
   void _writeBenchmark(Stopwatch stopwatch, int errorCount) {
     final String benchmarkOut = 'analysis_benchmark.json';
-    String expectedTime = argResults['benchmark-expected'];
-
     Map<String, dynamic> data = <String, dynamic>{
       'time': (stopwatch.elapsedMilliseconds / 1000.0),
       'issues': errorCount
     };
-
-    if (expectedTime != null)
-      data['expected'] = expectedTime;
-
     JsonEncoder encoder = new JsonEncoder.withIndent('  ');
     new File(benchmarkOut).writeAsStringSync(encoder.convert(data) + '\n');
-
     printStatus('Analysis benchmark written to $benchmarkOut.');
   }
 }

packages/flutter_tools/lib/src/commands/build_apk.dart

@@ -261,6 +261,21 @@ class BuildApkCommand extends FlutterCommand {
   }
 }
 
+// Return the directory name within the APK that is used for native code libraries
+// on the given platform.
+String getAbiDirectory(TargetPlatform platform) {
+  switch (platform) {
+    case TargetPlatform.android_arm:
+      return 'armeabi-v7a';
+    case TargetPlatform.android_x64:
+      return 'x86_64';
+    case TargetPlatform.android_x86:
+      return 'x86';
+    default:
+      throw new Exception('Unsupported platform.');
+  }
+}
+
 Future<_ApkComponents> _findApkComponents(
   TargetPlatform platform,
   BuildMode buildMode,
@@ -274,7 +289,7 @@ Future<_ApkComponents> _findApkComponents(
   components.extraFiles = extraFiles != null ? extraFiles : <String, File>{};
 
   if (tools.isLocalEngine) {
-    String abiDir = platform == TargetPlatform.android_arm ? 'armeabi-v7a' : 'x86_64';
+    String abiDir = getAbiDirectory(platform);
     String enginePath = tools.engineSrcPath;
     String buildDir = tools.getEngineArtifactsDirectory(platform, buildMode).path;
 
@@ -348,7 +363,7 @@ int _buildApk(
 
     _AssetBuilder artifactBuilder = new _AssetBuilder(tempDir, 'artifacts');
     artifactBuilder.add(classesDex, 'classes.dex');
-    String abiDir = platform == TargetPlatform.android_arm ? 'armeabi-v7a' : 'x86_64';
+    String abiDir = getAbiDirectory(platform);
     artifactBuilder.add(components.libSkyShell, 'lib/$abiDir/libsky_shell.so');
 
     for (String relativePath in components.extraFiles.keys)

packages/flutter_tools/lib/src/commands/upgrade.dart

@@ -10,7 +10,7 @@ import '../base/process.dart';
 import '../dart/pub.dart';
 import '../globals.dart';
 import '../runner/flutter_command.dart';
-import '../runner/version.dart';
+import '../version.dart';
 
 class UpgradeCommand extends FlutterCommand {
   @override

packages/flutter_tools/lib/src/device.dart

@@ -57,7 +57,7 @@ class DeviceManager {
     devices = devices.where((Device device) {
       return (device.id.toLowerCase().startsWith(deviceId) ||
         device.name.toLowerCase().startsWith(deviceId));
-    });
+    }).toList();
 
     return devices.length == 1 ? devices.first : null;
   }

packages/flutter_tools/lib/src/doctor.dart

@@ -12,7 +12,7 @@ import 'base/context.dart';
 import 'base/os.dart';
 import 'globals.dart';
 import 'ios/ios_workflow.dart';
-import 'runner/version.dart';
+import 'version.dart';
 
 const Map<String, String> _osNames = const <String, String>{
   'macos': 'Mac OS',

packages/flutter_tools/lib/src/runner/flutter_command_runner.dart

@@ -18,7 +18,7 @@ import '../build_configuration.dart';
 import '../globals.dart';
 import '../package_map.dart';
 import '../toolchain.dart';
-import 'version.dart';
+import '../version.dart';
 
 const String kFlutterRootEnvironmentVariableName = 'FLUTTER_ROOT'; // should point to //flutter/ (root of flutter/flutter repo)
 const String kFlutterEngineEnvironmentVariableName = 'FLUTTER_ENGINE'; // should point to //engine/src/ (root of flutter/engine repo)

packages/flutter_tools/lib/src/toolchain.dart

@@ -144,10 +144,9 @@ class ToolConfiguration {
 
       switch (platform) {
         case TargetPlatform.android_arm:
-          type = 'android';
-          break;
         case TargetPlatform.android_x64:
-          type = 'android_sim';
+        case TargetPlatform.android_x86:
+          type = 'android';
           break;
 
         // TODO(devoncarew): We will need an ios vs ios_x86 target (for ios vs. ios_sim).
@@ -166,6 +165,18 @@ class ToolConfiguration {
       if (isAotBuildMode(mode))
         buildOutputPath += '_Deploy';
 
+      // Add a suffix for the target architecture.
+      switch (platform) {
+        case TargetPlatform.android_x64:
+          buildOutputPath += '_x64';
+          break;
+        case TargetPlatform.android_x86:
+          buildOutputPath += '_x86';
+          break;
+        default:
+          break;
+      }
+
       return new Directory(path.join(engineSrcPath, buildOutputPath));
     } else {
       String suffix = mode != BuildMode.debug ? '-${getModeName(mode)}' : '';

packages/flutter_tools/lib/src/usage.dart

@@ -8,8 +8,9 @@ import 'package:usage/src/usage_impl_io.dart';
 import 'package:usage/usage.dart';
 
 import 'base/context.dart';
+import 'base/utils.dart';
 import 'globals.dart';
-import 'runner/version.dart';
+import 'version.dart';
 
 // TODO(devoncarew): We'll need to do some work on the user agent in order to
 // correctly track usage by operating system (dart-lang/usage/issues/70).
@@ -22,7 +23,19 @@ class Usage {
   Usage() {
     String version = FlutterVersion.getVersionString(whitelistBranchName: true);
     _analytics = new AnalyticsIO(_kFlutterUA, 'flutter', version);
-    _analytics.analyticsOpt = AnalyticsOpt.optOut;
+
+    bool runningOnCI = false;
+
+    // Many CI systems don't do a full git checkout.
+    if (version.startsWith('unknown/'))
+      runningOnCI = true;
+
+    // Check for common CI systems.
+    if (isRunningOnBot)
+      runningOnCI = true;
+
+    // If we think we're running on a CI system, default to not sending analytics.
+    _analytics.analyticsOpt = runningOnCI ? AnalyticsOpt.optIn : AnalyticsOpt.optOut;
   }
 
   /// Returns [Usage] active in the current app context.
@@ -82,10 +95,14 @@ class Usage {
 
     final String versionString = FlutterVersion.getVersionString(whitelistBranchName: true);
 
+    String welcomeString = 'Welcome to Flutter! - Flutter version $versionString - https://flutter.io';
+    welcomeString = welcomeString.padLeft((welcomeString.length + 100) ~/ 2);
+    welcomeString = welcomeString.padRight(100);
+
     printStatus('');
     printStatus('''
   ╔════════════════════════════════════════════════════════════════════════════════════════════════════╗
-  ║              Welcome to Flutter! - Flutter version $versionString - https://flutter.io             ║
+  ║$welcomeString║
   ║                                                                                                    ║
   ║ The Flutter tool anonymously reports feature usage statistics and basic crash reports to Google in ║
   ║ order to help Google contribute improvements to Flutter over time. See Google's privacy policy:    ║

packages/flutter_tools/lib/src/runner/version.dart → packages/flutter_tools/lib/src/version.dart

@@ -4,8 +4,8 @@
 
 import 'dart:io';
 
-import '../artifacts.dart';
-import '../base/process.dart';
+import 'artifacts.dart';
+import 'base/process.dart';
 
 final Set<String> kKnownBranchNames = new Set<String>.from(<String>[
   'master',
@@ -64,7 +64,7 @@ class FlutterVersion {
     return new FlutterVersion(flutterRoot != null ? flutterRoot : ArtifactStore.flutterRoot);
   }
 
-  /// Return a short string for the version (`a76bc8e22b/alpha`).
+  /// Return a short string for the version (`alpha/a76bc8e22b`).
   static String getVersionString({ bool whitelistBranchName: false }) {
     final String cwd = ArtifactStore.flutterRoot;
 
@@ -80,7 +80,7 @@ class FlutterVersion {
         branch = 'dev';
     }
 
-    return '$commit/$branch';
+    return '$branch/$commit';
   }
 }
 

travis/setup.sh

 #!/bin/bash
 set -ex
 
-# Download dependencies flutter
-./bin/flutter --version
-
-# Disable analytics on the bots (to avoid skewing analytics data).
+# disable analytics on the bots and download Flutter dependencies
 ./bin/flutter config --no-analytics
 
+# run pub get in all the repo packages
 ./bin/flutter update-packages