Add optimization for CHROMIUM_subscribe_uniform extension.

content/browser/gpu/gpu_process_host.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.h"
 
 #include "base/base64.h"
 #include "base/base_switches.h"
 #include "base/basictypes.h"
 #include "base/bind.h"
@@ skipping 564 matching lines @@
     IPC_MESSAGE_HANDLER(GpuHostMsg_GpuMemoryUmaStats,
                         OnGpuMemoryUmaStatsReceived)
 #if defined(OS_MACOSX)
     IPC_MESSAGE_HANDLER_GENERIC(GpuHostMsg_AcceleratedSurfaceBuffersSwapped,
                                 OnAcceleratedSurfaceBuffersSwapped(message))
 #endif
     IPC_MESSAGE_HANDLER(GpuHostMsg_DestroyChannel,
                         OnDestroyChannel)
     IPC_MESSAGE_HANDLER(GpuHostMsg_CacheShader,
                         OnCacheShader)
-
     IPC_MESSAGE_UNHANDLED(RouteOnUIThread(message))
   IPC_END_MESSAGE_MAP()
 
   return true;
 }
 
 void GpuProcessHost::OnChannelConnected(int32 peer_pid) {
   TRACE_EVENT0("gpu", "GpuProcessHost::OnChannelConnected");
 
   while (!queued_messages_.empty()) {
@@ skipping 467 matching lines @@
   TRACE_EVENT0("gpu", "GpuProcessHost::OnCacheShader");
   ClientIdToShaderCacheMap::iterator iter =
       client_id_to_shader_cache_.find(client_id);
   // If the cache doesn't exist then this is an off the record profile.
   if (iter == client_id_to_shader_cache_.end())
     return;
   iter->second->Cache(GetShaderPrefixKey() + ":" + key, shader);
 }
 
 }  // namespace content