Make Mac swap code like other platforms

gpu/ipc/service/gpu_channel_manager_delegate.h

 // 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.
 
 #ifndef GPU_IPC_SERVICE_GPU_CHANNEL_MANAGER_DELEGATE_H_
 #define GPU_IPC_SERVICE_GPU_CHANNEL_MANAGER_DELEGATE_H_
 
 #include "gpu/command_buffer/common/constants.h"
 #include "gpu/ipc/common/surface_handle.h"
 
-#if defined(OS_MACOSX)
-#include "ui/base/cocoa/remote_layer_api.h"
-#include "ui/events/latency_info.h"
-#include "ui/gfx/mac/io_surface.h"
-#endif
-
 class GURL;
 
 namespace IPC {
 struct ChannelHandle;
 }
 
 namespace gpu {
 
 struct GPUMemoryUmaStats;
 
@@ skipping 18 matching lines @@
   // Tells the delegate about GPU memory usage statistics for UMA logging.
   virtual void GpuMemoryUmaStats(const GPUMemoryUmaStats& params) = 0;
 
   // Tells the delegate to cache the given shader information in persistent
   // storage. The embedder is expected to repopulate the in-memory cache through
   // the respective GpuChannelManager API.
   virtual void StoreShaderToDisk(int32_t client_id,
                                  const std::string& key,
                                  const std::string& shader) = 0;
 
-#if defined(OS_MACOSX)
-  // Tells the delegate that an accelerated surface has swapped.
-  virtual void SendAcceleratedSurfaceBuffersSwapped(
-      gpu::SurfaceHandle surface_handle,
-      CAContextID ca_context_id,
-      bool fullscreen_low_power_ca_context_valid,
-      CAContextID fullscreen_low_power_ca_context_id,
-      const gfx::ScopedRefCountedIOSurfaceMachPort& io_surface,
-      const gfx::Size& size,
-      float scale_factor,
-      std::vector<ui::LatencyInfo> latency_info) = 0;
-#endif
-
 #if defined(OS_WIN)
   virtual void SendAcceleratedSurfaceCreatedChildWindow(
       SurfaceHandle parent_window,
       SurfaceHandle child_window) = 0;
 #endif
 
   // Sets the currently active URL.  Use GURL() to clear the URL.
   virtual void SetActiveURL(const GURL& url) = 0;
 
  protected:
   virtual ~GpuChannelManagerDelegate() {}
 };
 
 }  // namespace gpu
 
 #endif  // GPU_IPC_SERVICE_GPU_CHANNEL_MANAGER_DELEGATE_H_