[Android WebView] Implement Ubercomp for Render Thread support

android_webview/native/aw_contents.h

Index: android_webview/native/aw_contents.h
diff --git a/android_webview/native/aw_contents.h b/android_webview/native/aw_contents.h
index a74d9285881d8368edf55814d73eaac1387c554c..152a5100cf2b6d8a9acf5f891f882085ffe949c7 100644
--- a/android_webview/native/aw_contents.h
+++ b/android_webview/native/aw_contents.h
@@ -37,7 +37,7 @@ class AwContentsContainer;
 class AwContentsClientBridge;
 class AwPdfExporter;
 class AwWebContentsDelegate;
-class HardwareRenderer;
+class HardwareRendererInterface;
 class PermissionRequestHandler;
 
 // Native side of java-class of same name.
@@ -216,7 +216,6 @@ class AwContents : public FindHelper::Listener,
   void InitAutofillIfNecessary(bool enabled);
 
   void InitializeHardwareDrawIfNeeded();
-  void InitializeHardwareDrawOnRenderThread();
   void ReleaseHardwareDrawOnRenderThread();
 
   JavaObjectWeakGlobalRef java_ref_;
@@ -229,7 +228,7 @@ class AwContents : public FindHelper::Listener,
   scoped_ptr<AwContents> pending_contents_;
   SharedRendererState shared_renderer_state_;
   BrowserViewRenderer browser_view_renderer_;
-  scoped_ptr<HardwareRenderer> hardware_renderer_;
+  scoped_ptr<HardwareRendererInterface> hardware_renderer_;
   scoped_ptr<AwPdfExporter> pdf_exporter_;
   scoped_ptr<PermissionRequestHandler> permission_request_handler_;
 
@@ -240,6 +239,7 @@ class AwContents : public FindHelper::Listener,
   // The first element in the list is always the currently pending request.
   std::list<OriginCallback> pending_geolocation_prompts_;
 
+  base::Lock render_thread_lock_;
   GLViewRendererManager::Key renderer_manager_key_;
 
   DISALLOW_COPY_AND_ASSIGN(AwContents);