Implemented new fence syncs which replaces the old sync points.

content/common/gpu/client/command_buffer_proxy_impl.cc

Index: content/common/gpu/client/command_buffer_proxy_impl.cc
diff --git a/content/common/gpu/client/command_buffer_proxy_impl.cc b/content/common/gpu/client/command_buffer_proxy_impl.cc
index 53ce2d7ee543787639fe8e1d0d14af7e50d20764..6d9a8d58dbe33a8761a21fbe1d5f76246c4f41a7 100644
--- a/content/common/gpu/client/command_buffer_proxy_impl.cc
+++ b/content/common/gpu/client/command_buffer_proxy_impl.cc
@@ -375,6 +375,15 @@ void CommandBufferProxyImpl::DestroyTransferBuffer(int32 id) {
   Send(new GpuCommandBufferMsg_DestroyTransferBuffer(route_id_, id));
 }
 
+void CommandBufferProxyImpl::GetRouteInformation(int* channel_id,
+                                                 uint32_t* route_id) {
+  if (channel_id)

[piman, 2015/09/10 23:55:31]

maybe just DCHECK(channel_id) and DCHECK(route_id), the callers always have
valid pointers to both.

[David Yen, 2015/09/23 18:30:34]

No longer relevant.

+    *channel_id = channel_->channel_id();
+
+  if (route_id)
+    *route_id = route_id_;
+}
+
 gpu::Capabilities CommandBufferProxyImpl::GetCapabilities() {
   return capabilities_;
 }