cc: Route offscreen context creation for compositor to the browser.

content/browser/renderer_host/compositor_impl_android.h

Index: content/browser/renderer_host/compositor_impl_android.h
diff --git a/content/browser/renderer_host/compositor_impl_android.h b/content/browser/renderer_host/compositor_impl_android.h
index 07a3353749b4f6963cb609d0975db9e85f8e24c5..442f39eeb2e0bdc4176a30dc55c61417e80ebbaa 100644
--- a/content/browser/renderer_host/compositor_impl_android.h
+++ b/content/browser/renderer_host/compositor_impl_android.h
@@ -77,6 +77,10 @@ class CONTENT_EXPORT CompositorImpl
   virtual void didCommitAndDrawFrame() OVERRIDE;
   virtual void didCompleteSwapBuffers() OVERRIDE;
   virtual void scheduleComposite() OVERRIDE;
+  virtual scoped_refptr<ui::ContextProvider>
+      OffscreenContextProviderForMainThread() OVERRIDE;
+  virtual scoped_refptr<ui::ContextProvider>
+      OffscreenContextProviderForCompositorThread() OVERRIDE;
 
   // WebGraphicsContext3DSwapBuffersClient implementation.
   virtual void OnViewContextSwapBuffersPosted() OVERRIDE;
@@ -100,6 +104,8 @@ class CONTENT_EXPORT CompositorImpl
   Compositor::Client* client_;
   base::WeakPtrFactory<CompositorImpl> weak_factory_;
 
+  scoped_refptr<ui::ContextProvider> null_offscreen_context_provider_;
+
   DISALLOW_COPY_AND_ASSIGN(CompositorImpl);
 };