Refactor RenderProcessHost to use IPC::Listener instead of RenderWidgetHost

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 72 matching lines @@
 };
 
 RenderWidgetHostViewPort* GetRenderWidgetHostViewFromSurfaceID(
     int surface_id) {
   int render_process_id = 0;
   int render_widget_id = 0;
   if (!GpuSurfaceTracker::Get()->GetRenderWidgetIDForSurface(
         surface_id, &render_process_id, &render_widget_id))
     return NULL;
 
-  RenderProcessHost* process = RenderProcessHost::FromID(render_process_id);
-  if (!process)
-    return NULL;
-
-  RenderWidgetHost* host = process->GetRenderWidgetHostByID(render_widget_id);
+  RenderWidgetHost* host =
+      RenderWidgetHost::FromID(render_process_id, render_widget_id);
   return host ? RenderWidgetHostViewPort::FromRWHV(host->GetView()) : NULL;
 }
 
 }  // namespace
 
 void RouteToGpuProcessHostUIShimTask(int host_id, const IPC::Message& msg) {
   GpuProcessHostUIShim* ui_shim = GpuProcessHostUIShim::FromID(host_id);
   if (ui_shim)
     ui_shim->OnMessageReceived(msg);
 }
@@ skipping 116 matching lines @@
 void GpuProcessHostUIShim::OnUpdateVSyncParameters(int surface_id,
                                                    base::TimeTicks timebase,
                                                    base::TimeDelta interval) {
 
   int render_process_id = 0;
   int render_widget_id = 0;
   if (!GpuSurfaceTracker::Get()->GetRenderWidgetIDForSurface(
       surface_id, &render_process_id, &render_widget_id)) {
     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)->UpdateVSyncParameters(timebase, interval);
 }
 
 void GpuProcessHostUIShim::OnLogMessage(
     int level,
     const std::string& header,
     const std::string& message) {
   GpuDataManagerImpl::GetInstance()->AddLogMessage(
@@ skipping 148 matching lines @@
   view->AcceleratedSurfaceRelease();
 }
 
 void GpuProcessHostUIShim::OnVideoMemoryUsageStatsReceived(
     const GPUVideoMemoryUsageStats& video_memory_usage_stats) {
   GpuDataManagerImpl::GetInstance()->UpdateVideoMemoryUsageStats(
       video_memory_usage_stats);
 }
 
 }  // namespace content