aura: Remove CreateOffscreenContext from ui::ContextFactory.

cc/debug/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_
+#ifndef CC_DEBUG_FAKE_CONTEXT_PROVIDER_H_
+#define CC_DEBUG_FAKE_CONTEXT_PROVIDER_H_
 
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/thread_checker.h"
+#include "cc/base/cc_export.h"
 #include "cc/output/context_provider.h"
 
+namespace WebKit { class WebGraphicsContext3D; }
+
 namespace cc {
-class TestWebGraphicsContext3D;
 
-class FakeContextProvider : public cc::ContextProvider {
+class CC_EXPORT FakeContextProvider
+    : public NON_EXPORTED_BASE(cc::ContextProvider) {
  public:
-  typedef base::Callback<scoped_ptr<TestWebGraphicsContext3D>(void)>
+  typedef base::Callback<scoped_ptr<WebKit::WebGraphicsContext3D>(void)>
     CreateCallback;
 
   static scoped_refptr<FakeContextProvider> Create() {
     return Create(CreateCallback());
   }
 
   static scoped_refptr<FakeContextProvider> Create(
       const CreateCallback& create_callback) {
     scoped_refptr<FakeContextProvider> provider = new FakeContextProvider;
     if (!provider->InitializeOnMainThread(create_callback))
@@ skipping 19 matching lines @@
 
   base::ThreadChecker main_thread_checker_;
   base::ThreadChecker context_thread_checker_;
 
   base::Lock destroyed_lock_;
   bool destroyed_;
 };
 
 }  // namespace cc
 
-#endif  // CC_TEST_FAKE_CONTEXT_PROVIDER_H_
+#endif  // CC_DEBUG_FAKE_CONTEXT_PROVIDER_H_