Hook up ui::Compositor to Display's BeginFrameSource

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 "base/cancelable_callback.h"
 #include "base/macros.h"
 #include "build/build_config.h"
@@ skipping 15 matching lines @@
 // 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>
           overlay_candidate_validator);
 
   ~GpuBrowserCompositorOutputSurface() override;
 
  protected:
   // BrowserCompositorOutputSurface:
   void OnReflectorChanged() override;
   void OnGpuSwapBuffersCompleted(
       const std::vector<ui::LatencyInfo>& latency_info,
@@ skipping 31 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_