Make Mac swap code like other platforms

components/mus/gpu/gpu_service_mus.cc

 // 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 "components/mus/gpu/gpu_service_mus.h"
 
 #include "gpu/ipc/common/surface_handle.h"
 
 namespace mus {
 
@@ skipping 22 matching lines @@
 void GpuServiceMus::GpuMemoryUmaStats(const gpu::GPUMemoryUmaStats& params) {
   NOTIMPLEMENTED();
 }
 
 void GpuServiceMus::StoreShaderToDisk(int32_t client_id,
                                       const std::string& key,
                                       const std::string& shader) {
   NOTIMPLEMENTED();
 }
 
-#if defined(OS_MACOSX)
-void GpuServiceMus::SendAcceleratedSurfaceBuffersSwapped(
-    gpu::SurfaceHandle surface_handle,
-    CAContextID ca_context_id,
-    const gfx::ScopedRefCountedIOSurfaceMachPort& io_surface,
-    const gfx::Size& size,
-    float scale_factor,
-    std::vector<ui::LatencyInfo> latency_info) {
-  NOTIMPLEMENTED();
-}
-#endif
-
 #if defined(OS_WIN)
 void GpuServiceMus::SendAcceleratedSurfaceCreatedChildWindow(
     gpu::SurfaceHandle parent_window,
     gpu::SurfaceHandle child_window) {
   NOTIMPLEMENTED();
 }
 #endif
 
 void GpuServiceMus::SetActiveURL(const GURL& url) {
   NOTIMPLEMENTED();
 }
 
 }  // namespace mus