display_compositor: Move CompositorOverlayCandidateValidator from content.

content/browser/compositor/gpu_browser_compositor_output_surface.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_BROWSER_COMPOSITOR_GPU_BROWSER_COMPOSITOR_OUTPUT_SURFACE_H_
 #define CONTENT_BROWSER_COMPOSITOR_GPU_BROWSER_COMPOSITOR_OUTPUT_SURFACE_H_
 
 #include <memory>
 
 #include "base/cancelable_callback.h"
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "content/browser/compositor/browser_compositor_output_surface.h"
 #include "ui/gfx/swap_result.h"
 
+namespace display_compositor {
+class CompositorOverlayCandidateValidator;
+}
+
 namespace gpu {
 class CommandBufferProxyImpl;
 }
 
 namespace ui {
 class CompositorVSyncManager;
 }
 
 namespace content {
-class BrowserCompositorOverlayCandidateValidator;
 class ReflectorTexture;
 
 // Adapts a WebGraphicsContext3DCommandBufferImpl into a
 // cc::OutputSurface that also handles vsync parameter updates
 // arriving from the GPU process.
 class GpuBrowserCompositorOutputSurface
     : public BrowserCompositorOutputSurface {
  public:
   GpuBrowserCompositorOutputSurface(
       const scoped_refptr<ContextProviderCommandBuffer>& context,
       const scoped_refptr<ContextProviderCommandBuffer>& worker_context,
       const scoped_refptr<ui::CompositorVSyncManager>& vsync_manager,
       base::SingleThreadTaskRunner* task_runner,
-      std::unique_ptr<BrowserCompositorOverlayCandidateValidator>
+      std::unique_ptr<display_compositor::CompositorOverlayCandidateValidator>
           overlay_candidate_validator);
 
   ~GpuBrowserCompositorOutputSurface() override;
 
  protected:
   // BrowserCompositorOutputSurface:
   void OnReflectorChanged() override;
   void OnGpuSwapBuffersCompleted(
       const std::vector<ui::LatencyInfo>& latency_info,
       gfx::SwapResult result) override;
@@ skipping 30 matching lines @@
       update_vsync_parameters_callback_;
 
   std::unique_ptr<ReflectorTexture> reflector_texture_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuBrowserCompositorOutputSurface);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_COMPOSITOR_GPU_BROWSER_COMPOSITOR_OUTPUT_SURFACE_H_