Add optimization for CHROMIUM_subscribe_uniform extension.

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/callback_helpers.h"
@@ skipping 212 matching lines @@
     IPC_MESSAGE_HANDLER(GpuHostMsg_AcceleratedSurfaceInitialized,
                         OnAcceleratedSurfaceInitialized)
     IPC_MESSAGE_HANDLER(GpuHostMsg_AcceleratedSurfaceBuffersSwapped,
                         OnAcceleratedSurfaceBuffersSwapped)
     IPC_MESSAGE_HANDLER(GpuHostMsg_GraphicsInfoCollected,
                         OnGraphicsInfoCollected)
     IPC_MESSAGE_HANDLER(GpuHostMsg_VideoMemoryUsageStats,
                         OnVideoMemoryUsageStatsReceived);
     IPC_MESSAGE_HANDLER(GpuHostMsg_ResourcesRelinquished,
                         OnResourcesRelinquished)
+    IPC_MESSAGE_HANDLER(GpuHostMsg_AddSubscription, OnAddSubscription);
+    IPC_MESSAGE_HANDLER(GpuHostMsg_RemoveSubscription, OnRemoveSubscription);
 
     IPC_MESSAGE_UNHANDLED_ERROR()
   IPC_END_MESSAGE_MAP()
 
   return true;
 }
 
 void GpuProcessHostUIShim::OnLogMessage(
     int level,
     const std::string& header,
@@ skipping 56 matching lines @@
   GpuDataManagerImpl::GetInstance()->UpdateVideoMemoryUsageStats(
       video_memory_usage_stats);
 }
 
 void GpuProcessHostUIShim::OnResourcesRelinquished() {
   if (!relinquish_callback_.is_null()) {
     base::ResetAndReturn(&relinquish_callback_).Run();
   }
 }
 
+void GpuProcessHostUIShim::OnAddSubscription(
+    int32 process_id, unsigned int target) {
+  RenderProcessHost* rph = RenderProcessHost::FromID(process_id);
+  if (rph) {
+    rph->OnAddSubscription(target);
+  }
+}
+
+void GpuProcessHostUIShim::OnRemoveSubscription(
+    int32 process_id, unsigned int target) {
+  RenderProcessHost* rph = RenderProcessHost::FromID(process_id);
+  if (rph) {
+    rph->OnRemoveSubscription(target);
+  }
+}
+
 }  // namespace content