Remove offscreen compositor contexts.

content/test/test_context_provider_factory.h

-// 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.
-
-#ifndef CONTENT_TEST_TEST_CONTEXT_PROVIDER_FACTORY_H_
-#define CONTENT_TEST_TEST_CONTEXT_PROVIDER_FACTORY_H_
-
-#include "base/memory/ref_counted.h"
-
-namespace cc {
-class ContextProvider;
-}
-
-namespace webkit {
-namespace gpu {
-class ContextProviderInProcess;
-}
-}
-
-namespace content {
-
-class TestContextProviderFactory {
- public:
-  // The returned pointer is static and should not be deleted by the caller.
-  static TestContextProviderFactory* GetInstance();
-
-  scoped_refptr<cc::ContextProvider> OffscreenContextProviderForMainThread();
-
- private:
-  TestContextProviderFactory();
-  ~TestContextProviderFactory();
-
-  scoped_refptr<webkit::gpu::ContextProviderInProcess> main_thread_;
-
-  DISALLOW_COPY_AND_ASSIGN(TestContextProviderFactory);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_TEST_TEST_CONTEXT_PROVIDER_FACTORY_H_