Revert of cc: Implement shared worker contexts.

ui/compositor/test/in_process_context_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 UI_COMPOSITOR_TEST_IN_PROCESS_CONTEXT_FACTORY_H_
 #define UI_COMPOSITOR_TEST_IN_PROCESS_CONTEXT_FACTORY_H_
 
 #include "cc/test/test_gpu_memory_buffer_manager.h"
 #include "cc/test/test_image_factory.h"
 #include "cc/test/test_shared_bitmap_manager.h"
 #include "cc/test/test_task_graph_runner.h"
 #include "ui/compositor/compositor.h"
 
 namespace base {
 class Thread;
 }
 
 namespace cc {
 class OnscreenDisplayClient;
 class SurfaceManager;
 }
 
 namespace ui {
-class InProcessContextProvider;
 
 class InProcessContextFactory : public ContextFactory {
  public:
   // surface_manager is owned by the creator of this and must outlive the
   // context factory.
   InProcessContextFactory(bool context_factory_for_test,
                           cc::SurfaceManager* surface_manager);
   ~InProcessContextFactory() override;
 
   // If true (the default) an OutputSurface is created that does not display
@@ skipping 15 matching lines @@
   uint32 GetImageTextureTarget(gfx::BufferFormat format,
                                gfx::BufferUsage usage) override;
   cc::SharedBitmapManager* GetSharedBitmapManager() override;
   gpu::GpuMemoryBufferManager* GetGpuMemoryBufferManager() override;
   cc::TaskGraphRunner* GetTaskGraphRunner() override;
   scoped_ptr<cc::SurfaceIdAllocator> CreateSurfaceIdAllocator() override;
   void ResizeDisplay(ui::Compositor* compositor,
                      const gfx::Size& size) override;
 
  private:
-  scoped_refptr<InProcessContextProvider> shared_main_thread_contexts_;
-  scoped_refptr<InProcessContextProvider> shared_worker_context_provider_;
+  scoped_refptr<cc::ContextProvider> shared_main_thread_contexts_;
   cc::TestSharedBitmapManager shared_bitmap_manager_;
   cc::TestGpuMemoryBufferManager gpu_memory_buffer_manager_;
   cc::TestImageFactory image_factory_;
   cc::TestTaskGraphRunner task_graph_runner_;
   uint32_t next_surface_id_namespace_;
   bool use_test_surface_;
   bool context_factory_for_test_;
   cc::SurfaceManager* surface_manager_;
 
   base::hash_map<Compositor*, cc::OnscreenDisplayClient*> per_compositor_data_;
 
   DISALLOW_COPY_AND_ASSIGN(InProcessContextFactory);
 };
 
 }  // namespace ui
 
 #endif  // UI_COMPOSITOR_TEST_IN_PROCESS_CONTEXT_FACTORY_H_