Provide shared context to Platform API in renderer.

cc/test/fake_context_provider.h

 // Copyright 2013 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.
 
 #ifndef CC_TEST_FAKE_CONTEXT_PROVIDER_H_
 #define CC_TEST_FAKE_CONTEXT_PROVIDER_H_
 
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/synchronization/lock.h"
 #include "cc/context_provider.h"
 
 namespace cc {
 class TestWebGraphicsContext3D;
 
 class FakeContextProvider : public cc::ContextProvider {
  public:
   typedef base::Callback<scoped_ptr<TestWebGraphicsContext3D>(void)>
     CreateCallback;
 
   FakeContextProvider();
   explicit FakeContextProvider(const CreateCallback& create_callback);
 
   virtual bool InitializeOnMainThread() OVERRIDE;
   virtual bool BindToCurrentThread() OVERRIDE;
   virtual WebKit::WebGraphicsContext3D* Context3d() OVERRIDE;
   virtual class GrContext* GrContext() OVERRIDE;
   virtual void VerifyContexts() OVERRIDE;
-
-  bool DestroyedOnMainThread();
+  virtual bool DestroyedOnMainThread() OVERRIDE;
 
  protected:
   virtual ~FakeContextProvider();
 
   CreateCallback create_callback_;
   scoped_ptr<WebKit::WebGraphicsContext3D> context3d_;
 
   base::Lock destroyed_lock_;
   bool destroyed_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_FAKE_CONTEXT_PROVIDER_H_