Drop frontbuffers with ui-use-gpu-process, synchronized with browser, decoupled from backbuffer dro…

content/browser/gpu/gpu_process_host_ui_shim.cc

Index: content/browser/gpu/gpu_process_host_ui_shim.cc
diff --git a/content/browser/gpu/gpu_process_host_ui_shim.cc b/content/browser/gpu/gpu_process_host_ui_shim.cc
index e8cd609a94d835171036b1eabc0aa1e4a903dcd5..edef78087e0634555c9cc24565d0e52e17b41edd 100644
--- a/content/browser/gpu/gpu_process_host_ui_shim.cc
+++ b/content/browser/gpu/gpu_process_host_ui_shim.cc
@@ -309,7 +309,11 @@ void GpuProcessHostUIShim::OnAcceleratedSurfaceNew(
   TransportDIB::Handle shm_handle = TransportDIB::DefaultHandleValue();
 
   view->AcceleratedSurfaceNew(
-      params.width, params.height, &surface_handle, &shm_handle);
+      params.width,
+      params.height,
+      &surface_handle,
+      &shm_handle,
+      params.route_id);
   delayed_send.Cancel();
   Send(new AcceleratedSurfaceMsg_NewACK(
       params.route_id, surface_handle, shm_handle));