Reverts "Enforce a policy on supported Gradle, Java, AGP, and KGP versions" (#143114)

Reverts flutter/flutter#142000

Initiated by: vashworth

Reason for reverting: Causing `Mac_pixel_7pro run_release_test` and `Mac_arm64_android run_debug_test_android` to fail: https://ci.chromium.org/ui/p/flutter/builders/prod/Mac_pixel_7pro%20run_release_test/539/overview
https://ci.chromium.org/ui/p/flutter/builders/prod/Mac_arm64_android%20run_debug_test_android/6682/overview

Original PR Author: gmackall

Reviewed By: {reidbaker, camsim99, bartekpacia}

This change reverts the following previous change:
Original Description:
Policy per https://flutter.dev/go/android-dependency-versions.

https://github.com/flutter/flutter/issues/140913

~Still a WIP while I clean up some error handling, remove some prints, and figure out a Java test (more difficult than the others because I believe we can only install one java version per ci shard).~

~Also it looks like there are errors that I need to fix when this checking is applied to a project that uses the old way of applying AGP/KGP using the top-level `build.gradle` file (instead of the new template way of applying them in the `settings.gradle` file).~ Done, this is why [these lines exist](https://github.com/flutter/flutter/blob/9af6bae6b9a8d7a8a363467b834f52bfc64c9336/packages/flutter_tools/gradle/src/main/groovy/flutter.groovy#L72-L88) in `flutter.groovy`. They just needed to be added

packages/flutter_tools/gradle/build.gradle.kts

@@ -28,9 +28,8 @@ gradlePlugin {
 
 dependencies {
     // When bumping, also update:
-    //  * ndkVersion in FlutterExtension in packages/flutter_tools/gradle/src/main/groovy/flutter.groovy
-    //  * AGP version in the buildscript block in packages/flutter_tools/gradle/src/main/groovy/flutter.groovy
-    //  * AGP version in the buildscript block in packages/flutter_tools/gradle/src/main/kotlin/dependency_version_checker.gradle.kts
+    //  * ndkVersion in FlutterExtension in packages/flutter_tools/gradle/src/main/flutter.groovy
     //  * AGP version constants in packages/flutter_tools/lib/src/android/gradle_utils.dart
+    //  * AGP version in buildscript block in packages/flutter_tools/gradle/src/main/flutter.groovy
     compileOnly("com.android.tools.build:gradle:7.3.0")
 }

packages/flutter_tools/gradle/src/main/groovy/flutter.groovy

@@ -113,8 +113,7 @@ buildscript {
     }
     dependencies {
         // When bumping, also update:
-        //  * ndkVersion in FlutterExtension in packages/flutter_tools/gradle/src/main/groovy/flutter.groovy
-        //  * AGP version in the buildscript block in packages/flutter_tools/gradle/src/main/kotlin/dependency_version_checker.gradle.kts
+        //  * ndkVersion in FlutterExtension in packages/flutter_tools/gradle/src/main/flutter.groovy
         //  * AGP version constants in packages/flutter_tools/lib/src/android/gradle_utils.dart
         //  * AGP version in dependencies block in packages/flutter_tools/gradle/build.gradle.kts
         classpath("com.android.tools.build:gradle:7.3.0")
@@ -322,23 +321,6 @@ class FlutterPlugin implements Plugin<Project> {
         String flutterExecutableName = Os.isFamily(Os.FAMILY_WINDOWS) ? "flutter.bat" : "flutter"
         flutterExecutable = Paths.get(flutterRoot.absolutePath, "bin", flutterExecutableName).toFile()
 
-        // Validate that the provided Gradle, Java, AGP, and KGP versions are all within our
-        // supported range.
-        final Boolean shouldSkipDependencyChecks = project.hasProperty("skipDependencyChecks")
-                && project.getProperty("skipDependencyChecks");
-        if (!shouldSkipDependencyChecks) {
-            try {
-                final String dependencyCheckerPluginPath = Paths.get(flutterRoot.absolutePath,
-                        "packages", "flutter_tools", "gradle", "src", "main", "kotlin",
-                        "dependency_version_checker.gradle.kts")
-                project.apply from: dependencyCheckerPluginPath
-            } catch (Exception ignored) {
-                project.logger.error("Warning: Flutter was unable to detect project Gradle, Java, " +
-                        "AGP, and KGP versions. Skipping dependency version checking. Error was: "
-                        + ignored)
-            }
-        }
-
         // Use Kotlin DSL to handle baseApplicationName logic due to Groovy dynamic dispatch bug.
         project.apply from: Paths.get(flutterRoot.absolutePath, "packages", "flutter_tools", "gradle", "src", "main", "kotlin", "flutter.gradle.kts")
 
@@ -1533,8 +1515,6 @@ abstract class BaseFlutterTask extends DefaultTask {
     @Optional @Input
     Boolean validateDeferredComponents
 
-    @Optional @Input
-    Boolean skipDependencyChecks
     @Optional @Input
     String flavor
 

packages/flutter_tools/lib/src/android/README.md

@@ -29,11 +29,6 @@ version.
 SDK versions are updated (you should see these fail if you do not fix them
 preemptively).
 
-Also, make sure to also update to the same version in the following places:
-- The version in the buildscript block in `packages/flutter_tools/gradle/src/main/groovy/flutter.groovy`.
-- The version in the buildscript block in `packages/flutter_tools/gradle/src/main/kotlin/dependency_version_checker.gradle.kts`.
-- The version in the dependencies block in `packages/flutter_tools/gradle/build.gradle.kts`.
-
 #### Gradle
 When updating the Gradle version used in project templates
 (`templateDefaultGradleVersion`), make sure that:

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

@@ -370,9 +370,6 @@ class AndroidGradleBuilder implements AndroidBuilder {
     if (!buildInfo.androidGradleDaemon) {
       command.add('--no-daemon');
     }
-    if (buildInfo.androidSkipBuildDependencyValidation) {
-      command.add('-PskipDependencyChecks=true');
-    }
     final LocalEngineInfo? localEngineInfo = _artifacts.localEngineInfo;
     if (localEngineInfo != null) {
       final Directory localEngineRepo = _getLocalEngineRepo(

packages/flutter_tools/lib/src/build_info.dart

@@ -41,7 +41,6 @@ class BuildInfo {
     this.nullSafetyMode = NullSafetyMode.sound,
     this.codeSizeDirectory,
     this.androidGradleDaemon = true,
-    this.androidSkipBuildDependencyValidation = false,
     this.packageConfig = PackageConfig.empty,
     this.initializeFromDill,
     this.assumeInitializeFromDillUpToDate = false,
@@ -154,10 +153,6 @@ class BuildInfo {
   /// The Gradle daemon may also be disabled in the Android application's properties file.
   final bool androidGradleDaemon;
 
-  /// Whether to skip checking of individual versions of our Android build time
-  /// dependencies.
-  final bool androidSkipBuildDependencyValidation;
-
   /// Additional key value pairs that are passed directly to the gradle project via the `-P`
   /// flag.
   final List<String> androidProjectArgs;

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

@@ -147,7 +147,6 @@ abstract final class FlutterOptions {
   static const String kAndroidGradleDaemon = 'android-gradle-daemon';
   static const String kDeferredComponents = 'deferred-components';
   static const String kAndroidProjectArgs = 'android-project-arg';
-  static const String kAndroidSkipBuildDependencyValidation = 'android-skip-build-dependency-validation';
   static const String kInitializeFromDill = 'initialize-from-dill';
   static const String kAssumeInitializeFromDillUpToDate = 'assume-initialize-from-dill-up-to-date';
   static const String kNativeAssetsYamlFile = 'native-assets-yaml-file';
@@ -975,12 +974,6 @@ abstract class FlutterCommand extends Command<void> {
       defaultsTo: true,
       hide: hide,
     );
-    argParser.addFlag(
-      FlutterOptions.kAndroidSkipBuildDependencyValidation,
-      help: 'Whether to skip version checking for Java, Gradle, '
-          'the Android Gradle Plugin (AGP), and the Kotlin Gradle Plugin (KGP)'
-          ' during Android builds.',
-    );
     argParser.addMultiOption(
       FlutterOptions.kAndroidProjectArgs,
       help: 'Additional arguments specified as key=value that are passed directly to the gradle '
@@ -1235,9 +1228,6 @@ abstract class FlutterCommand extends Command<void> {
     final bool androidGradleDaemon = !argParser.options.containsKey(FlutterOptions.kAndroidGradleDaemon)
       || boolArg(FlutterOptions.kAndroidGradleDaemon);
 
-    final bool androidSkipBuildDependencyValidation = !argParser.options.containsKey(FlutterOptions.kAndroidSkipBuildDependencyValidation)
-        || boolArg(FlutterOptions.kAndroidSkipBuildDependencyValidation);
-
     final List<String> androidProjectArgs = argParser.options.containsKey(FlutterOptions.kAndroidProjectArgs)
       ? stringsArg(FlutterOptions.kAndroidProjectArgs)
       : <String>[];
@@ -1326,7 +1316,6 @@ abstract class FlutterCommand extends Command<void> {
       nullSafetyMode: nullSafetyMode,
       codeSizeDirectory: codeSizeDirectory,
       androidGradleDaemon: androidGradleDaemon,
-      androidSkipBuildDependencyValidation: androidSkipBuildDependencyValidation,
       packageConfig: packageConfig,
       androidProjectArgs: androidProjectArgs,
       initializeFromDill: argParser.options.containsKey(FlutterOptions.kInitializeFromDill)

packages/flutter_tools/test/android_preview_integration.shard/android_dependency_version_checking_test.dart

-// Copyright 2014 The Flutter Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-import 'dart:io';
-
-import 'package:file/src/interface/file_system_entity.dart';
-
-import '../integration.shard/test_utils.dart';
-import '../src/common.dart';
-import '../src/context.dart';
-
-const String gradleSettingsFileContent = r'''
-pluginManagement {
-    def flutterSdkPath = {
-        def properties = new Properties()
-        file("local.properties").withInputStream { properties.load(it) }
-        def flutterSdkPath = properties.getProperty("flutter.sdk")
-        assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
-        return flutterSdkPath
-    }()
-
-    includeBuild("$flutterSdkPath/packages/flutter_tools/gradle")
-
-    repositories {
-        google()
-        mavenCentral()
-        gradlePluginPortal()
-    }
-}
-
-plugins {
-    id "dev.flutter.flutter-plugin-loader" version "1.0.0"
-    id "com.android.application" version "AGP_REPLACE_ME" apply false
-    id "org.jetbrains.kotlin.android" version "KGP_REPLACE_ME" apply false
-}
-
-include ":app"
-
-''';
-
-const String agpReplacementString = 'AGP_REPLACE_ME';
-const String kgpReplacementString = 'KGP_REPLACE_ME';
-
-const String gradleWrapperPropertiesFileContent = r'''
-distributionBase=GRADLE_USER_HOME
-distributionPath=wrapper/dists
-zipStoreBase=GRADLE_USER_HOME
-zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-GRADLE_REPLACE_ME-all.zip
-
-''';
-
-const String gradleReplacementString = 'GRADLE_REPLACE_ME';
-
-// This test is currently on the preview shard (but not using the preview
-// version of Android) because it is the only one using Java 11. This test
-// requires Java 11 due to the intentionally low version of Gradle.
-void main() {
-  late Directory tempDir;
-
-  setUpAll(() async {
-    tempDir = createResolvedTempDirectorySync('run_test.');
-  });
-
-  tearDownAll(() async {
-    tryToDelete(tempDir as FileSystemEntity);
-  });
-
-  testUsingContext(
-      'AGP version out of "warn" support band prints warning but still builds', () async {
-    // Create a new flutter project.
-    final String flutterBin = fileSystem.path.join(getFlutterRoot(), 'bin', 'flutter');
-    ProcessResult result = await processManager.run(<String>[
-      flutterBin,
-      'create',
-      'dependency_checker_app',
-      '--platforms=android',
-    ], workingDirectory: tempDir.path);
-    expect(result, const ProcessResultMatcher());
-    const String gradleVersion = '7.5';
-    const String agpVersion = '4.2.0';
-    const String kgpVersion = '1.7.10';
-
-    final Directory app = Directory(fileSystem.path.join(tempDir.path, 'dependency_checker_app'));
-
-    // Modify gradle version to passed in version.
-    final File gradleWrapperProperties = File(fileSystem.path.join(
-        app.path, 'android', 'gradle', 'wrapper', 'gradle-wrapper.properties'));
-    final String propertyContent = gradleWrapperPropertiesFileContent.replaceFirst(
-      gradleReplacementString,
-      gradleVersion,
-    );
-    await gradleWrapperProperties.writeAsString(propertyContent, flush: true);
-
-    final File gradleSettings = File(fileSystem.path.join(
-        app.path, 'android', 'settings.gradle'));
-    final String settingsContent = gradleSettingsFileContent
-        .replaceFirst(agpReplacementString, agpVersion)
-        .replaceFirst(kgpReplacementString, kgpVersion);
-    await gradleSettings.writeAsString(settingsContent, flush: true);
-
-
-    // Ensure that gradle files exists from templates.
-    result = await processManager.run(<String>[
-      flutterBin,
-      'build',
-      'apk',
-      '--debug',
-    ], workingDirectory: app.path);
-    expect(result, const ProcessResultMatcher());
-    expect(result.stderr, contains('Please upgrade your Android Gradle '
-        'Plugin version'));
-  });
-
-  testUsingContext(
-      'Gradle version out of "warn" support band prints warning but still builds', () async {
-    // Create a new flutter project.
-    final String flutterBin = fileSystem.path.join(getFlutterRoot(), 'bin', 'flutter');
-    ProcessResult result = await processManager.run(<String>[
-      flutterBin,
-      'create',
-      'dependency_checker_app',
-      '--platforms=android',
-    ], workingDirectory: tempDir.path);
-    expect(result, const ProcessResultMatcher());
-    const String gradleVersion = '7.0';
-    const String agpVersion = '4.2.0';
-    const String kgpVersion = '1.7.10';
-
-    final Directory app = Directory(fileSystem.path.join(tempDir.path, 'dependency_checker_app'));
-
-    // Modify gradle version to passed in version.
-    final File gradleWrapperProperties = File(fileSystem.path.join(
-        app.path, 'android', 'gradle', 'wrapper', 'gradle-wrapper.properties'));
-    final String propertyContent = gradleWrapperPropertiesFileContent.replaceFirst(
-      gradleReplacementString,
-      gradleVersion,
-    );
-    await gradleWrapperProperties.writeAsString(propertyContent, flush: true);
-
-    final File gradleSettings = File(fileSystem.path.join(
-        app.path, 'android', 'settings.gradle'));
-    final String settingsContent = gradleSettingsFileContent
-        .replaceFirst(agpReplacementString, agpVersion)
-        .replaceFirst(kgpReplacementString, kgpVersion);
-    await gradleSettings.writeAsString(settingsContent, flush: true);
-
-
-    // Ensure that gradle files exists from templates.
-    result = await processManager.run(<String>[
-      flutterBin,
-      'build',
-      'apk',
-      '--debug',
-    ], workingDirectory: app.path);
-    expect(result, const ProcessResultMatcher());
-    expect(result.stderr, contains('Please upgrade your Gradle version'));
-  });
-
-  testUsingContext(
-      'Kotlin version out of "warn" support band prints warning but still builds', () async {
-    // Create a new flutter project.
-    final String flutterBin = fileSystem.path.join(getFlutterRoot(), 'bin', 'flutter');
-    ProcessResult result = await processManager.run(<String>[
-      flutterBin,
-      'create',
-      'dependency_checker_app',
-      '--platforms=android',
-    ], workingDirectory: tempDir.path);
-    expect(result, const ProcessResultMatcher());
-    const String gradleVersion = '7.5';
-    const String agpVersion = '7.4.0';
-    const String kgpVersion = '1.4.10';
-
-    final Directory app = Directory(fileSystem.path.join(tempDir.path, 'dependency_checker_app'));
-
-    // Modify gradle version to passed in version.
-    final File gradleWrapperProperties = File(fileSystem.path.join(
-        app.path, 'android', 'gradle', 'wrapper', 'gradle-wrapper.properties'));
-    final String propertyContent = gradleWrapperPropertiesFileContent.replaceFirst(
-      gradleReplacementString,
-      gradleVersion,
-    );
-    await gradleWrapperProperties.writeAsString(propertyContent, flush: true);
-
-    final File gradleSettings = File(fileSystem.path.join(
-        app.path, 'android', 'settings.gradle'));
-    final String settingsContent = gradleSettingsFileContent
-        .replaceFirst(agpReplacementString, agpVersion)
-        .replaceFirst(kgpReplacementString, kgpVersion);
-    await gradleSettings.writeAsString(settingsContent, flush: true);
-
-
-    // Ensure that gradle files exists from templates.
-    result = await processManager.run(<String>[
-      flutterBin,
-      'build',
-      'apk',
-      '--debug',
-    ], workingDirectory: app.path);
-    expect(result, const ProcessResultMatcher());
-    expect(result.stderr, contains('Please upgrade your Kotlin version'));
-  });
-
-  // TODO(gmackall): Add tests for build blocking when the
-  // corresponding error versions are enabled.
-}