[google_sign_in_web] Add a no-op Android implementation (flutter#2410)

packages/google_sign_in/google_sign_in_web/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.8.2+1
+
+* Add a non-op Android implementation to avoid a flaky Gradle issue.
+
 ## 0.8.2
 
 * Require Flutter SDK 1.12.13+hotfix.4 or greater.

packages/google_sign_in/google_sign_in_web/android/build.gradle

@@ -0,0 +1,33 @@
+group 'io.flutter.plugins.google_sign_in_web'
+version '1.0'
+
+buildscript {
+    repositories {
+        google()
+        jcenter()
+    }
+
+    dependencies {
+        classpath 'com.android.tools.build:gradle:3.5.0'
+    }
+}
+
+rootProject.allprojects {
+    repositories {
+        google()
+        jcenter()
+    }
+}
+
+apply plugin: 'com.android.library'
+
+android {
+    compileSdkVersion 28
+
+    defaultConfig {
+        minSdkVersion 16
+    }
+    lintOptions {
+        disable 'InvalidPackage'
+    }
+}

packages/google_sign_in/google_sign_in_web/android/gradle.properties

@@ -0,0 +1,2 @@
+org.gradle.jvmargs=-Xmx1536M
+android.enableR8=true

packages/google_sign_in/google_sign_in_web/android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.2-all.zip

packages/google_sign_in/google_sign_in_web/android/settings.gradle

@@ -0,0 +1 @@
+rootProject.name = 'google_sign_in_web'

packages/google_sign_in/google_sign_in_web/android/src/main/AndroidManifest.xml

@@ -0,0 +1,3 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+  package="io.flutter.plugins.google_sign_in_web">
+</manifest>

packages/google_sign_in/google_sign_in_web/android/src/main/java/io/flutter/plugins/google_sign_in_web/GoogleSignInWebPlugin.java

@@ -0,0 +1,24 @@
+package io.flutter.plugins.google_sign_in_web;
+
+import io.flutter.embedding.engine.plugins.FlutterPlugin;
+import io.flutter.plugin.common.PluginRegistry.Registrar;
+
+/** GoogleSignInWebPlugin */
+public class GoogleSignInWebPlugin implements FlutterPlugin {
+  @Override
+  public void onAttachedToEngine(FlutterPluginBinding flutterPluginBinding) {}
+
+  // This static function is optional and equivalent to onAttachedToEngine. It supports the old
+  // pre-Flutter-1.12 Android projects. You are encouraged to continue supporting
+  // plugin registration via this function while apps migrate to use the new Android APIs
+  // post-flutter-1.12 via https://flutter.dev/go/android-project-migration.
+  //
+  // It is encouraged to share logic between onAttachedToEngine and registerWith to keep
+  // them functionally equivalent. Only one of onAttachedToEngine or registerWith will be called
+  // depending on the user's project. onAttachedToEngine or registerWith must both be defined
+  // in the same class.
+  public static void registerWith(Registrar registrar) {}
+
+  @Override
+  public void onDetachedFromEngine(FlutterPluginBinding binding) {}
+}

packages/google_sign_in/google_sign_in_web/pubspec.yaml

@@ -2,7 +2,7 @@ name: google_sign_in_web
 description: Flutter plugin for Google Sign-In, a secure authentication system
   for signing in with a Google account on Android, iOS and Web.
 homepage: https://github.com/flutter/plugins/tree/master/packages/google_sign_in/google_sign_in_web
-version: 0.8.2
+version: 0.8.2+1
 
 flutter:
   plugin: