Refactor RenderProcessHost to use IPC::Listener instead of RenderWidgetHost

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/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 115 matching lines @@
     return;
   }
 
   int render_process_id = 0;
   int render_widget_id = 0;
   if (!GpuSurfaceTracker::Get()->GetRenderWidgetIDForSurface(
       surface_id, &render_process_id, &render_widget_id)) {
     RenderWidgetHostImpl::CompositorFrameDrawn(latency_info);
     return;
   }
-  RenderProcessHost* host = RenderProcessHost::FromID(render_process_id);
-  if (!host)
-    return;
-  RenderWidgetHost* rwh = host->GetRenderWidgetHostByID(render_widget_id);
+  RenderWidgetHost* rwh =
+    RenderWidgetHost::FromID(render_process_id, render_widget_id);
   if (!rwh)
     return;
   RenderWidgetHostImpl::From(rwh)->AcknowledgeSwapBuffersToRenderer();
   if (interval != base::TimeDelta())
     RenderWidgetHostImpl::From(rwh)->UpdateVSyncParameters(timebase, interval);
   RenderWidgetHostImpl::From(rwh)->FrameSwapped(latency_info);
 }
 
 void AcceleratedSurfaceBuffersSwappedCompleted(
     int host_id,
@@ skipping 1126 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