Implement MusGpuMemoryBufferManager

components/mus/surfaces/surfaces_context_provider.cc

Index: components/mus/surfaces/surfaces_context_provider.cc
diff --git a/components/mus/surfaces/surfaces_context_provider.cc b/components/mus/surfaces/surfaces_context_provider.cc
index 2e91b9897c17332a5a34e6ca830824c1dc2e9684..1b32c377cac46e27822ad082f9b81f738976e62f 100644
--- a/components/mus/surfaces/surfaces_context_provider.cc
+++ b/components/mus/surfaces/surfaces_context_provider.cc
@@ -60,6 +60,12 @@ SurfacesContextProvider::SurfacesContextProvider(
         service->gpu_channel_local(), widget, gfx::Size(),
         shared_command_buffer, stream_id, stream_priority, attributes,
         active_url, gpu_preference, task_runner);
+    command_buffer_proxy_impl_->SetSwapBuffersCompletionCallback(
+        base::Bind(&SurfacesContextProvider::OnGpuSwapBuffersCompleted,
+                   base::Unretained(this)));
+    command_buffer_proxy_impl_->SetUpdateVSyncParametersCallback(
+        base::Bind(&SurfacesContextProvider::OnUpdateVSyncParameters,
+                   base::Unretained(this)));
   }
 }
 
@@ -170,6 +176,23 @@ void SurfacesContextProvider::GpuCompletedSwapBuffers(gfx::SwapResult result) {
   }
 }
 
+void SurfacesContextProvider::OnGpuSwapBuffersCompleted(
+    const std::vector<ui::LatencyInfo>& latency_info,
+    gfx::SwapResult result,
+    const gpu::GpuProcessHostedCALayerTreeParamsMac* params_mac) {
+  if (!swap_buffers_completion_callback_.is_null()) {
+    swap_buffers_completion_callback_.Run(result);
+  }
+}
+
+void SurfacesContextProvider::OnUpdateVSyncParameters(
+    base::TimeTicks timebase,
+    base::TimeDelta interval) {
+  if (delegate_)

[piman, 2016/06/09 19:31:32]

nit: use {} per style.

[Peng, 2016/06/09 20:32:45]

Done.

+    delegate_->OnVSyncParametersUpdated(timebase.ToInternalValue(),
+                                        interval.ToInternalValue());
+}
+
 void SurfacesContextProvider::SetSwapBuffersCompletionCallback(
     gl::GLSurface::SwapCompletionCallback callback) {
   swap_buffers_completion_callback_ = callback;