cc: Cleanup class/struct forward declarations

cc/output/output_surface.h

 // Copyright 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 CC_OUTPUT_OUTPUT_SURFACE_H_
 #define CC_OUTPUT_OUTPUT_SURFACE_H_
 
 #include <deque>
 #include <memory>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/threading/thread_checker.h"
 #include "cc/base/cc_export.h"
 #include "cc/output/context_provider.h"
 #include "cc/output/overlay_candidate_validator.h"
 #include "cc/output/software_output_device.h"
 #include "cc/output/vulkan_context_provider.h"
 #include "cc/resources/returned_resource.h"
 #include "gpu/command_buffer/common/texture_in_use_response.h"
 #include "ui/gfx/color_space.h"
 
-namespace ui {
-class LatencyInfo;
-}
-
 namespace gfx {
 class ColorSpace;
-class Rect;
 class Size;
-class Transform;
 }
 
 namespace cc {
 
-struct ManagedMemoryPolicy;
 class OutputSurfaceClient;
 class OutputSurfaceFrame;
 
 // This class represents a platform-independent API for presenting
 // buffers to display via GPU or software compositing. Implementations
 // can provide platform-specific behaviour.
 class CC_EXPORT OutputSurface {
  public:
   struct Capabilities {
     Capabilities() = default;
@@ skipping 74 matching lines @@
   scoped_refptr<VulkanContextProvider> vulkan_context_provider_;
   std::unique_ptr<SoftwareOutputDevice> software_device_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(OutputSurface);
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_OUTPUT_SURFACE_H_