cc: Make most of cc::OutputSurface abstract.

content/browser/compositor/gpu_output_surface_mac.mm

 // Copyright 2016 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.
 
 #include "content/browser/compositor/gpu_output_surface_mac.h"
 
 #include "cc/output/compositor_frame.h"
+#include "cc/output/output_surface_client.h"
 #include "components/display_compositor/compositor_overlay_candidate_validator.h"
 #include "content/browser/gpu/gpu_surface_tracker.h"
 #include "content/common/gpu/client/context_provider_command_buffer.h"
 #include "gpu/GLES2/gl2extchromium.h"
 #include "gpu/ipc/client/gpu_process_hosted_ca_layer_tree_params.h"
 #include "ui/accelerated_widget_mac/accelerated_widget_mac.h"
 #include "ui/base/cocoa/remote_layer_api.h"
 #include "ui/compositor/compositor.h"
 #include "ui/display/types/display_snapshot.h"
 #include "ui/gfx/mac/io_surface.h"
@@ skipping 81 matching lines @@
                 remote_layers_->fullscreen_low_power_layer.get(),
                 base::scoped_policy::RETAIN),
             params_mac->pixel_size, params_mac->scale_factor);
       } else {
         widget->GotIOSurfaceFrame(params_mac->io_surface,
                                   params_mac->pixel_size,
                                   params_mac->scale_factor);
       }
     }
   }
-  DidReceiveTextureInUseResponses(params_mac->responses);
+  client_->DidReceiveTextureInUseResponses(params_mac->responses);
   GpuSurfacelessBrowserCompositorOutputSurface::OnGpuSwapBuffersCompleted(
       latency_info, result, params_mac);
 }
 
 void GpuOutputSurfaceMac::SetSurfaceSuspendedForRecycle(bool suspended) {
   if (suspended) {
     // It may be that there are frames in-flight from the GPU process back to
     // the browser. Make sure that these frames are not displayed by ignoring
     // them in GpuProcessHostUIShim, until the browser issues a SwapBuffers for
     // the new content.
@@ skipping 13 matching lines @@
           SHOULD_NOT_SHOW_FRAMES_NO_SWAP_AFTER_SUSPENDED;
     }
   }
 }
 
 bool GpuOutputSurfaceMac::SurfaceIsSuspendForRecycle() const {
   return should_show_frames_state_ == SHOULD_NOT_SHOW_FRAMES_SUSPENDED;
 }
 
 }  // namespace content