content: Cleanup class/struct forward declarations

content/browser/renderer_host/compositor_impl_android.h

 // Copyright (c) 2012 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_BROWSER_RENDERER_HOST_COMPOSITOR_IMPL_ANDROID_H_
 #define CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_IMPL_ANDROID_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 11 matching lines @@
 #include "content/common/gpu/client/context_provider_command_buffer.h"
 #include "content/public/browser/android/compositor.h"
 #include "gpu/command_buffer/common/capabilities.h"
 #include "gpu/ipc/common/surface_handle.h"
 #include "third_party/khronos/GLES2/gl2.h"
 #include "ui/android/context_provider_factory.h"
 #include "ui/android/resources/resource_manager_impl.h"
 #include "ui/android/resources/ui_resource_provider.h"
 #include "ui/android/window_android_compositor.h"
 
-class SkBitmap;
 struct ANativeWindow;
 
 namespace cc {
 class Display;
 class Layer;
 class LayerTreeHost;
 class OutputSurface;
-class SurfaceIdAllocator;
-class SurfaceManager;
 class VulkanContextProvider;
-class VulkanInProcessContextProvider;
 }
 
 namespace content {
 class CompositorClient;
 
 // -----------------------------------------------------------------------------
 // Browser-side compositor that manages a tree of content and UI layers.
 // -----------------------------------------------------------------------------
 class CONTENT_EXPORT CompositorImpl
     : public Compositor,
@@ skipping 129 matching lines @@
   gpu::Capabilities gpu_capabilities_;
   bool needs_begin_frames_;
   base::WeakPtrFactory<CompositorImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CompositorImpl);
 };
 
 } // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_IMPL_ANDROID_H_