Remove package:sky/base

These files really belong on other libraries.

packages/flutter/lib/README.md

@@ -8,12 +8,6 @@ The bottom-most layer is the Sky Platform, which is exposed to Dart
 code as [various `dart:` packages](https://api.dartlang.org/),
 including `dart:sky`.
 
-The [base/](base/) directory contains libraries that extend these core
-APIs to provide base classes for tree structures
-([base/node.dart](base/node.dart)), hit testing
-([base/hit_test.dart](base/hit_test.dart)), and debugging
-([base/debug.dart](base/debug.dart)).
-
 Above this layer is the [animation](animation.dart) library,
 which provides core animation primitives, and the [gestures/](gestures/)
 directory, which define a gesture recognition and disambiguation system.
@@ -49,8 +43,8 @@ Here is a diagram summarizing all this:
     | |         | painting   |    |
     +-+         +------------+    |
     | gestures/ | animation  |    |
-    +-----------+---+--------+    |
-    |    base/      |  mojo/      |
+    +-----------+------------+    |
+    |             mojo/           |
     +------------+--+-+----+------+ -------
     |  dart:sky  |    |    | Host |
     +--------+---+    |    | APIs |  C++

packages/flutter/lib/base/README.md

-Sky Base
-========
-
-AbstractNode
-------------
-
-The [node.dart](node.dart) file defines a class, `AbstractNode`, which
-can be used to build mutable trees.
-
-* When a subclass is changing the parent of a child, it should
-  call either parent.adoptChild(child) or parent.dropChild(child)
-  as appropriate. Subclasses should expose an API for
-  manipulating the tree if you want to (e.g. a setter for a
-  'child' property, or an 'add()' method to manipulate a list).
-
-* You can see the current parent by querying 'parent'.
-
-* You can see the current attachment state by querying
-  'attached'. The root of any tree that is to be considered
-  attached should be manually attached by calling 'attach()'.
-  Other than that, don't call 'attach()' or 'detach()'. This is
-  all managed automatically assuming you call the 'adoptChild()'
-  and 'dropChild()' methods appropriately.
-
-* Subclasses that have children must override 'attach()' and
-  'detach()' as described below.
-
-* Nodes always have a 'depth' greater than their ancestors'.
-  There's no guarantee regarding depth between siblings. The
-  depth of a node is used to ensure that nodes are processed in
-  depth order. The 'depth' of a child can be more than one
-  greater than the 'depth' of the parent, because the 'depth'
-  values are never decreased: all that matters is that it's
-  greater than the parent. Consider a tree with a root node A, a
-  child B, and a grandchild C. Initially, A will have 'depth' 0,
-  B 'depth' 1, and C 'depth' 2. If C is moved to be a child of A,
-  sibling of B, then the numbers won't change. C's 'depth' will
-  still be 2. This is all managed automatically assuming you call
-  'adoptChild()' and 'dropChild()' appropriately.
-
-
-Dependencies
-------------
-
-No dependencies except for `dart:sky` and Dart's core libraries.

packages/flutter/lib/gestures/long_press.dart

@@ -4,9 +4,9 @@
 
 import 'dart:sky' as sky;
 
-import 'package:sky/base/pointer_router.dart';
 import 'package:sky/gestures/arena.dart';
 import 'package:sky/gestures/constants.dart';
+import 'package:sky/gestures/pointer_router.dart';
 import 'package:sky/gestures/recognizer.dart';
 
 typedef void GestureLongPressListener();

packages/flutter/lib/gestures/recognizer.dart

@@ -5,11 +5,11 @@
 import 'dart:async';
 import 'dart:sky' as sky;
 
-import 'package:sky/base/pointer_router.dart';
 import 'package:sky/gestures/arena.dart';
 import 'package:sky/gestures/constants.dart';
+import 'package:sky/gestures/pointer_router.dart';
 
-export 'package:sky/base/pointer_router.dart' show PointerRouter;
+export 'package:sky/gestures/pointer_router.dart' show PointerRouter;
 
 abstract class GestureRecognizer extends GestureArenaMember {
   GestureRecognizer({ PointerRouter router }) : _router = router;

packages/flutter/lib/mojo/asset_bundle.dart

@@ -9,7 +9,7 @@ import 'dart:typed_data';
 
 import 'package:mojo/core.dart' as core;
 import 'package:mojo_services/mojo/asset_bundle/asset_bundle.mojom.dart';
-import 'package:sky/base/image_resource.dart';
+import 'package:sky/mojo/image_resource.dart';
 import 'package:sky/mojo/net/fetch.dart';
 import 'package:sky/mojo/net/image_cache.dart' as image_cache;
 import 'package:sky/mojo/shell.dart' as shell;

packages/flutter/lib/mojo/net/image_cache.dart

@@ -7,7 +7,7 @@ import 'dart:collection';
 import 'dart:sky' as sky;
 
 import 'package:mojo/mojo/url_response.mojom.dart';
-import 'package:sky/base/image_resource.dart';
+import 'package:sky/mojo/image_resource.dart';
 import 'package:sky/mojo/net/fetch.dart';
 
 final HashMap<String, ImageResource> _cache = new Map<String, ImageResource>();

packages/flutter/lib/rendering.dart

@@ -10,10 +10,13 @@ library rendering;
 export 'package:sky/src/rendering/auto_layout.dart';
 export 'package:sky/src/rendering/block.dart';
 export 'package:sky/src/rendering/box.dart';
+export 'package:sky/src/rendering/debug.dart';
 export 'package:sky/src/rendering/flex.dart';
 export 'package:sky/src/rendering/grid.dart';
+export 'package:sky/src/rendering/hit_test.dart';
 export 'package:sky/src/rendering/image.dart';
 export 'package:sky/src/rendering/layer.dart';
+export 'package:sky/src/rendering/node.dart';
 export 'package:sky/src/rendering/object.dart';
 export 'package:sky/src/rendering/paragraph.dart';
 export 'package:sky/src/rendering/proxy_box.dart';

packages/flutter/lib/src/painting/README.md

 This directory contains painting-related libraries that only depend on
-core Dart libraries, `../base/*`, and [animation.dart](../animation.dart). Note
-that [animation.dart](../animation.dart) depends on the Newton Dart library.
+core Dart libraries and [animation.dart](../../animation.dart). Note
+that [animation.dart](../../animation.dart) depends on the Newton Dart library.

packages/flutter/lib/src/painting/box_painter.dart

@@ -6,7 +6,7 @@ import 'dart:math' as math;
 import 'dart:sky' as sky;
 import 'dart:sky' show Point, Offset, Size, Rect, Color, Paint, Path;
 
-import 'package:sky/base/image_resource.dart';
+import 'package:sky/mojo/image_resource.dart';
 import 'package:sky/src/painting/shadows.dart';
 
 /// An immutable set of offsets in each of the four cardinal directions

packages/flutter/lib/src/rendering/README.md

@@ -385,6 +385,5 @@ Dependencies
 ------------
 
  * [`package:sky/animation.dart`](../../animation.dart)
- * [`package:sky/base`](../../base)
  * [`package:sky/mojo`](../../mojo)
  * [`package:sky/painting.dart`](../../painting.dart)

packages/flutter/lib/src/rendering/box.dart

@@ -5,8 +5,8 @@
 import 'dart:math' as math;
 import 'dart:sky' as sky;
 
-import 'package:sky/base/debug.dart';
 import 'package:sky/painting.dart';
+import 'package:sky/src/rendering/debug.dart';
 import 'package:sky/src/rendering/object.dart';
 import 'package:vector_math/vector_math.dart';
 

packages/flutter/lib/base/node.dart → packages/flutter/lib/src/rendering/node.dart

@@ -6,6 +6,37 @@
 ///
 /// AbstractNode has as notion of depth, attachment, and parent, but does not
 /// have a model for children.
+///
+/// * When a subclass is changing the parent of a child, it should
+///   call either parent.adoptChild(child) or parent.dropChild(child)
+///   as appropriate. Subclasses should expose an API for
+///   manipulating the tree if you want to (e.g. a setter for a
+///   'child' property, or an 'add()' method to manipulate a list).
+///
+/// * You can see the current parent by querying 'parent'.
+///
+/// * You can see the current attachment state by querying
+///   'attached'. The root of any tree that is to be considered
+///   attached should be manually attached by calling 'attach()'.
+///   Other than that, don't call 'attach()' or 'detach()'. This is
+///   all managed automatically assuming you call the 'adoptChild()'
+///   and 'dropChild()' methods appropriately.
+///
+/// * Subclasses that have children must override 'attach()' and
+///   'detach()' as described below.
+///
+/// * Nodes always have a 'depth' greater than their ancestors'.
+///   There's no guarantee regarding depth between siblings. The
+///   depth of a node is used to ensure that nodes are processed in
+///   depth order. The 'depth' of a child can be more than one
+///   greater than the 'depth' of the parent, because the 'depth'
+///   values are never decreased: all that matters is that it's
+///   greater than the parent. Consider a tree with a root node A, a
+///   child B, and a grandchild C. Initially, A will have 'depth' 0,
+///   B 'depth' 1, and C 'depth' 2. If C is moved to be a child of A,
+///   sibling of B, then the numbers won't change. C's 'depth' will
+///   still be 2. This is all managed automatically assuming you call
+///   'adoptChild()' and 'dropChild()' appropriately.
 class AbstractNode {
 
   // AbstractNode represents a node in a tree.

packages/flutter/lib/src/rendering/object.dart

@@ -7,14 +7,14 @@ import 'dart:sky' as sky;
 import 'dart:sky' show Point, Offset, Size, Rect, Color, Paint, Path;
 
 import 'package:sky/animation.dart';
-import 'package:sky/base/debug.dart';
-import 'package:sky/base/hit_test.dart';
-import 'package:sky/base/node.dart';
+import 'package:sky/src/rendering/debug.dart';
+import 'package:sky/src/rendering/hit_test.dart';
 import 'package:sky/src/rendering/layer.dart';
+import 'package:sky/src/rendering/node.dart';
 import 'package:vector_math/vector_math.dart';
 
 export 'dart:sky' show Point, Offset, Size, Rect, Color, Paint, Path;
-export 'package:sky/base/hit_test.dart' show EventDisposition, HitTestTarget, HitTestEntry, HitTestResult;
+export 'package:sky/src/rendering/hit_test.dart' show EventDisposition, HitTestTarget, HitTestEntry, HitTestResult;
 
 /// Base class for data associated with a [RenderObject] by its parent
 ///

packages/flutter/lib/src/rendering/sky_binding.dart

@@ -5,10 +5,10 @@
 import 'dart:sky' as sky;
 
 import 'package:sky/animation.dart';
-import 'package:sky/base/hit_test.dart';
-import 'package:sky/base/pointer_router.dart';
 import 'package:sky/gestures/arena.dart';
+import 'package:sky/gestures/pointer_router.dart';
 import 'package:sky/src/rendering/box.dart';
+import 'package:sky/src/rendering/hit_test.dart';
 import 'package:sky/src/rendering/object.dart';
 import 'package:sky/src/rendering/view.dart';
 

packages/flutter/lib/src/widgets/README.md

@@ -501,7 +501,6 @@ Dependencies
 
  * `package:vector_math`
  * [`package:sky/animation.dart`](../../animation.dart)
- * [`package:sky/base`](../../base)
  * [`package:sky/painting.dart`](../../painting.dart)
  * [`package:sky/rendering.dart`](../../rendering.dart)
  * [`package:sky/theme`](../../theme)

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

@@ -6,8 +6,8 @@ import 'dart:sky' as sky;
 
 import 'package:vector_math/vector_math.dart';
 
-import 'package:sky/base/image_resource.dart';
 import 'package:sky/mojo/asset_bundle.dart';
+import 'package:sky/mojo/image_resource.dart';
 import 'package:sky/mojo/net/image_cache.dart' as image_cache;
 import 'package:sky/src/painting/text_painter.dart';
 import 'package:sky/src/painting/text_style.dart';
@@ -25,11 +25,11 @@ import 'package:sky/src/rendering/viewport.dart';
 import 'package:sky/src/widgets/default_text_style.dart';
 import 'package:sky/src/widgets/framework.dart';
 
-export 'package:sky/base/hit_test.dart' show EventDisposition, combineEventDispositions;
 export 'package:sky/src/painting/text_style.dart';
 export 'package:sky/src/rendering/block.dart' show BlockDirection;
 export 'package:sky/src/rendering/box.dart' show BoxConstraints;
 export 'package:sky/src/rendering/flex.dart' show FlexJustifyContent, FlexAlignItems, FlexDirection;
+export 'package:sky/src/rendering/hit_test.dart' show EventDisposition, combineEventDispositions;
 export 'package:sky/src/rendering/object.dart' show Point, Offset, Size, Rect, Color, Paint, Path;
 export 'package:sky/src/rendering/proxy_box.dart' show BackgroundImage, BoxDecoration, BoxDecorationPosition, BoxShadow, Border, BorderSide, EdgeDims, Shape;
 export 'package:sky/src/rendering/shifted_box.dart' show ShrinkWrap;

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

@@ -4,9 +4,7 @@
 
 import 'dart:collection';
 
-import 'package:sky/base/hit_test.dart';
-import 'package:sky/src/rendering/object.dart';
-import 'package:sky/src/rendering/sky_binding.dart';
+import 'package:sky/rendering.dart';
 import 'package:sky/src/widgets/basic.dart';
 import 'package:sky/src/widgets/framework.dart';
 

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

@@ -7,15 +7,15 @@ import 'dart:collection';
 import 'dart:sky' as sky;
 
 import 'package:sky/animation.dart';
-import 'package:sky/base/hit_test.dart';
 import 'package:sky/mojo/activity.dart';
 import 'package:sky/src/rendering/box.dart';
+import 'package:sky/src/rendering/hit_test.dart';
 import 'package:sky/src/rendering/object.dart';
 import 'package:sky/src/rendering/sky_binding.dart';
 import 'package:sky/src/rendering/view.dart';
 
-export 'package:sky/base/hit_test.dart' show EventDisposition, combineEventDispositions;
 export 'package:sky/src/rendering/box.dart' show BoxConstraints, BoxDecoration, Border, BorderSide, EdgeDims;
+export 'package:sky/src/rendering/hit_test.dart' show EventDisposition, combineEventDispositions;
 export 'package:sky/src/rendering/object.dart' show Point, Offset, Size, Rect, Color, Paint, Path;
 
 final bool _shouldLogRenderDuration = false; // see also 'enableProfilingLoop' argument to runApp()

packages/unit/test/gestures/long_press_test.dart

 import 'package:quiver/testing/async.dart';
-import 'package:sky/base/pointer_router.dart';
 import 'package:sky/gestures/arena.dart';
 import 'package:sky/gestures/long_press.dart';
+import 'package:sky/gestures/pointer_router.dart';
 import 'package:sky/gestures/show_press.dart';
 import 'package:test/test.dart';
 

packages/unit/test/base/pointer_router_test.dart → packages/unit/test/gestures/pointer_router_test.dart

 import 'dart:sky' as sky;
 
-import 'package:sky/base/pointer_router.dart';
+import 'package:sky/gestures/pointer_router.dart';
 import 'package:test/test.dart';
 
 import '../engine/mock_events.dart';

packages/unit/test/gestures/scroll_test.dart

 import 'dart:sky' as sky;
 
-import 'package:sky/base/pointer_router.dart';
 import 'package:sky/gestures/arena.dart';
+import 'package:sky/gestures/pointer_router.dart';
 import 'package:sky/gestures/scroll.dart';
 import 'package:sky/gestures/tap.dart';
 import 'package:test/test.dart';

packages/unit/test/gestures/show_press_test.dart

 import 'package:quiver/testing/async.dart';
-import 'package:sky/base/pointer_router.dart';
 import 'package:sky/gestures/arena.dart';
+import 'package:sky/gestures/pointer_router.dart';
 import 'package:sky/gestures/show_press.dart';
 import 'package:test/test.dart';
 

packages/unit/test/gestures/tap_test.dart

-import 'package:sky/base/pointer_router.dart';
 import 'package:sky/gestures/arena.dart';
+import 'package:sky/gestures/pointer_router.dart';
 import 'package:sky/gestures/tap.dart';
 import 'package:test/test.dart';