Provide shared context to Platform API in renderer.

content/browser/renderer_host/compositor_impl_android.cc

 // Copyright (c) 2012 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 "content/browser/renderer_host/compositor_impl_android.h"
 
 #include <android/bitmap.h>
 #include <android/native_window_jni.h>
 
 #include "base/bind.h"
@@ skipping 310 matching lines @@
 
 void CompositorImpl::didCompleteSwapBuffers() {
   client_->OnSwapBuffersCompleted();
 }
 
 void CompositorImpl::scheduleComposite() {
   client_->ScheduleComposite();
 }
 
 class NullContextProvider : public cc::ContextProvider {
-  virtual bool InitializeOnMainThread() { return false; }
-  virtual bool BindToCurrentThread() { return false; }
-  virtual WebKit::WebGraphicsContext3D* Context3d() { return NULL; }
-  virtual class GrContext* GrContext() { return NULL; }
-  virtual void VerifyContexts() {}
+  virtual bool InitializeOnMainThread() OVERRIDE { return false; }
+  virtual bool BindToCurrentThread() OVERRIDE { return false; }
+  virtual WebKit::WebGraphicsContext3D* Context3d() OVERRIDE { return NULL; }
+  virtual class GrContext* GrContext() OVERRIDE { return NULL; }
+  virtual void VerifyContexts() OVERRIDE {}
+  virtual bool DestroyedOnMainThread() OVERRIDE { return false; }
  protected:

[piman, 2013/03/06 01:08:59]

nit: blank line before 'protected:'

[danakj, 2013/03/06 01:41:32]

Done.

   virtual ~NullContextProvider() {}
 };
 
 scoped_refptr<cc::ContextProvider>
 CompositorImpl::OffscreenContextProviderForMainThread() {
   // There is no support for offscreen contexts, or compositor filters that
   // would require them in this compositor instance. If they are needed,
   // then implement a context provider that provides contexts from
   // ImageTransportSurfaceAndroid.
   if (!null_offscreen_context_provider_)
@@ skipping 71 matching lines @@
     case ANDROID_BITMAP_FORMAT_RGBA_8888:
       return GL_UNSIGNED_BYTE;
       break;
     case ANDROID_BITMAP_FORMAT_RGB_565:
     default:
       return GL_UNSIGNED_SHORT_5_6_5;
   }
 }
 
 } // namespace content