Refactor RenderProcessHost to use IPC::Listener instead of RenderWidgetHost

content/browser/gpu/gpu_process_host.cc

Index: content/browser/gpu/gpu_process_host.cc
diff --git a/content/browser/gpu/gpu_process_host.cc b/content/browser/gpu/gpu_process_host.cc
index 36f0dd91b72d1c41162aee8b2e6c69cb06375b8d..01a20ad6cb67d38b24b61685bdb182eed2944d7f 100644
--- a/content/browser/gpu/gpu_process_host.cc
+++ b/content/browser/gpu/gpu_process_host.cc
@@ -134,10 +134,8 @@ void AcceleratedSurfaceBuffersSwappedCompletedForRenderer(
     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();