android: Use hw acceleration in android_webview_shell

This creates a (GL)SurfaceView overlay on top of the shell
container view which runs its own thread for rendering.
It calls into the native draw functor through a small
dynamic library (drawgl.so).

Committed previously: https://chromium.googlesource.com/chromium/src/+/09acbf59e7e8f1de574498ee5ba8eae0b0775438

Review URL: https://codereview.chromium.org/414503004

Cr-Commit-Position: refs/heads/master@{#292761}

android_webview/android_webview_tests.gypi

@@ -10,13 +10,15 @@
         'libwebviewchromium',
         'android_webview_java',
         'android_webview_pak',
+        'libdrawgl',
       ],
       'variables': {
         'apk_name': 'AndroidWebView',
         'java_in_dir': 'test/shell',
         'native_lib_target': 'libstandalonelibwebviewchromium',
         'resource_dir': 'test/shell/res',
         'extensions_to_not_compress': 'pak',
+        'extra_native_libs': ['<(SHARED_LIB_DIR)/libdrawgl.>(android_product_extension)'],
         'additional_input_paths': [
           '<(PRODUCT_DIR)/android_webview_apk/assets/webviewchromium.pak',
           '<(PRODUCT_DIR)/android_webview_apk/assets/en-US.pak',
@@ -162,5 +164,17 @@
       ],
       'includes': [ '../build/apk_test.gypi' ],
     },
+    {
+      'target_name': 'libdrawgl',
+      'type': 'shared_library',
+      # Do not depend on any other component here, since this target
+      # builds a separate shared library!
+      'include_dirs': [
+        '..',
+      ],
+      'sources': [
+          '../android_webview/test/shell/src/draw_gl/draw_gl.cc',
+      ],
+    },
   ],
 }

android_webview/javatests/src/org/chromium/android_webview/test/AndroidScrollIntegrationTest.java

@@ -65,7 +65,7 @@ private static class ScrollTestContainerView extends AwTestContainerView {
             new OverScrollByCallbackHelper();
 
         public ScrollTestContainerView(Context context) {
-            super(context);
+            super(context, false);
         }
 
         public CallbackHelper getOnScrollToCallbackHelper() {

android_webview/javatests/src/org/chromium/android_webview/test/AwTestBase.java

@@ -274,7 +274,7 @@ public void run() {
      */
     public static class TestDependencyFactory extends AwContents.DependencyFactory {
         public AwTestContainerView createAwTestContainerView(AwTestRunnerActivity activity) {
-            return new AwTestContainerView(activity);
+            return new AwTestContainerView(activity, false);
         }
         public AwSettings createAwSettings(Context context, boolean supportsLegacyQuirks) {
             return new AwSettings(context, false, supportsLegacyQuirks);

android_webview/test/shell/AndroidManifest.xml

@@ -10,17 +10,19 @@
     package="org.chromium.android_webview.shell">
 
   <application android:name="org.chromium.android_webview.shell.AwShellApplication"
-      android:label="AwShellApplication" android:hardwareAccelerated="false">
+      android:label="AwShellApplication">
     <activity android:name="org.chromium.android_webview.shell.AwShellActivity"
         android:label="Android WebView Test Shell"
-        android:configChanges="orientation|keyboardHidden|keyboard|screenSize">
+        android:configChanges="orientation|keyboardHidden|keyboard|screenSize"
+        android:hardwareAccelerated="true">
       <intent-filter>
         <action android:name="android.intent.action.MAIN" />
         <category android:name="android.intent.category.LAUNCHER" />
       </intent-filter>
     </activity>
     <activity android:name="org.chromium.android_webview.test.AwTestRunnerActivity"
-        android:label="AwTestRunnerActivity">
+        android:label="AwTestRunnerActivity"
+        android:hardwareAccelerated="false">
       <intent-filter>
         <action android:name="android.intent.action.MAIN" />
         <category android:name="android.intent.category.FRAMEWORK_INSTRUMENTATION_TEST" />

android_webview/test/shell/src/draw_gl/DEPS

@@ -0,0 +1,7 @@
+include_rules = [
+  # draw_gl compiles its own shared library for a single entry point
+  # for testing. Therefore it cannot depend on any other module,
+  # except for shared definitions.
+  "-android_webview",
+  "+android_webview/public/browser",
+]

android_webview/test/shell/src/draw_gl/draw_gl.cc

@@ -0,0 +1,61 @@
+// Copyright (c) 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <jni.h>
+
+#include "android_webview/public/browser/draw_gl.h"
+
+extern "C" {
+
+JNIEXPORT jint JNI_OnLoad(JavaVM* vm, void* reserved) {
+  return JNI_VERSION_1_4;
+}
+
+// This code goes into its own dynamic library, so we cannot depend on
+// any other components like base.
+JNIEXPORT void JNICALL
+    Java_org_chromium_android_1webview_shell_DrawGL_nativeDrawGL(
+        JNIEnv*,
+        jclass,
+        jlong draw_gl,
+        jlong view,
+        jint width,
+        jint height,
+        jint scroll_x,
+        jint scroll_y,
+        jint mode) {
+   AwDrawGLInfo draw_info;
+   draw_info.mode = static_cast<AwDrawGLInfo::Mode>(mode);
+   draw_info.version = kAwDrawGLInfoVersion;
+   draw_info.is_layer = false;
+   draw_info.width = width;
+   draw_info.height = height;
+   draw_info.clip_left = 0;
+   draw_info.clip_top = 0;
+   draw_info.clip_bottom = height;
+   draw_info.clip_right = width;
+   draw_info.transform[0] = 1.0;
+   draw_info.transform[1] = 0.0;
+   draw_info.transform[2] = 0.0;
+   draw_info.transform[3] = 0.0;
+
+   draw_info.transform[4] = 0.0;
+   draw_info.transform[5] = 1.0;
+   draw_info.transform[6] = 0.0;
+   draw_info.transform[7] = 0.0;
+
+   draw_info.transform[8] = 0.0;
+   draw_info.transform[9] = 0.0;
+   draw_info.transform[10] = 1.0;
+   draw_info.transform[11] = 0.0;
+
+   draw_info.transform[12] = -scroll_x;
+   draw_info.transform[13] = -scroll_y;
+   draw_info.transform[14] = 0.0;
+   draw_info.transform[15] = 1.0;
+   AwDrawGLFunction* draw_func = reinterpret_cast<AwDrawGLFunction*>(draw_gl);
+   draw_func(view, &draw_info, 0);
+}
+
+}

android_webview/test/shell/src/org/chromium/android_webview/shell/AwShellActivity.java

@@ -80,7 +80,7 @@ public void onCreate(Bundle savedInstanceState) {
 
     private AwTestContainerView createAwTestContainerView() {
         AwBrowserProcess.start(this);
-        AwTestContainerView testContainerView = new AwTestContainerView(this);
+        AwTestContainerView testContainerView = new AwTestContainerView(this, true);
         AwContentsClient awContentsClient = new NullContentsClient() {
             private View mCustomView;
 

android_webview/test/shell/src/org/chromium/android_webview/shell/DrawGL.java

@@ -0,0 +1,18 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.android_webview.shell;
+
+/**
+ * Provides an entry point to the native draw functor.
+ */
+public class DrawGL {
+  public static void drawGL(long drawGL, long viewContext, int width, int height,
+          int scrollX, int scrollY, int mode) {
+      nativeDrawGL(drawGL, viewContext, width, height, scrollX, scrollY, mode);
+  }
+
+  private static native void nativeDrawGL(long drawGL, long viewContext,
+          int width, int height, int scrollX, int scrollY, int mode);
+}