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

content/browser/gpu/gpu_process_host_ui_shim.cc

 // Copyright (c) 2012 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 "content/browser/gpu/gpu_process_host_ui_shim.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 198 matching lines @@
 #endif
 
 #if defined(USE_AURA)
     IPC_MESSAGE_HANDLER(GpuHostMsg_AcceleratedSurfaceNew,
                         OnAcceleratedSurfaceNew)
 #endif
 
 #if defined(USE_AURA)
     IPC_MESSAGE_HANDLER(GpuHostMsg_AcceleratedSurfaceRelease,
                         OnAcceleratedSurfaceRelease)
+    IPC_MESSAGE_HANDLER(GpuHostMsg_AcceleratedSurfaceRequestReleaseFront,
+                        OnAcceleratedSurfaceRequestReleaseFront)
 #endif
 
     IPC_MESSAGE_UNHANDLED_ERROR()
   IPC_END_MESSAGE_MAP()
 
   return true;
 }
 
 void GpuProcessHostUIShim::OnLogMessage(
     int level,
@@ skipping 73 matching lines @@
 
   RenderWidgetHostViewPort* view = GetRenderWidgetHostViewFromSurfaceID(
       params.surface_id);
   if (!view)
     return;
 
   uint64 surface_handle = params.surface_handle;
   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, host_id_);
   delayed_send.Cancel();
   Send(new AcceleratedSurfaceMsg_NewACK(
       params.route_id, surface_handle, shm_handle));
 }
 
 #endif
 
 static base::TimeDelta GetSwapDelay() {
   CommandLine* cmd_line = CommandLine::ForCurrentProcess();
   int delay = 0;
@@ skipping 64 matching lines @@
 
 void GpuProcessHostUIShim::OnAcceleratedSurfaceRelease(
     const GpuHostMsg_AcceleratedSurfaceRelease_Params& params) {
   RenderWidgetHostViewPort* view = GetRenderWidgetHostViewFromSurfaceID(
       params.surface_id);
   if (!view)
     return;
   view->AcceleratedSurfaceRelease(params.identifier);
 }
 
+void GpuProcessHostUIShim::OnAcceleratedSurfaceRequestReleaseFront(
+    const GpuHostMsg_AcceleratedSurfaceRequestReleaseFront_Params& params) {
+  RenderWidgetHostViewPort* view = GetRenderWidgetHostViewFromSurfaceID(
+      params.surface_id);
+  if (!view)
+    return;
+  view->AcceleratedSurfaceRequestReleaseFront(params.identifier,
+                                              params.request_id,
+                                              params.retry_count,
+                                              params.route_id,
+                                              host_id_);
+}
+
 #endif