Avoid creating a RenderWidgetHostView for proxies.

content/browser/renderer_host/render_view_host_impl.cc

Index: content/browser/renderer_host/render_view_host_impl.cc
diff --git a/content/browser/renderer_host/render_view_host_impl.cc b/content/browser/renderer_host/render_view_host_impl.cc
index 7e4d7af0be501ef022b2e30413639c6b2f83eada..a96b7f0765e80098be78d08840be77bad3a27bc7 100644
--- a/content/browser/renderer_host/render_view_host_impl.cc
+++ b/content/browser/renderer_host/render_view_host_impl.cc
@@ -295,8 +295,14 @@ bool RenderViewHostImpl::CreateRenderView(
 
   set_renderer_initialized(true);
 
-  GpuSurfaceTracker::Get()->SetSurfaceHandle(
-      surface_id(), GetCompositingSurface());
+  if (proxy_route_id == MSG_ROUTING_NONE) {
+    GpuSurfaceTracker::Get()->SetSurfaceHandle(surface_id(),
+                                               GetCompositingSurface());
+  } else {
+    GpuSurfaceTracker::Get()->SetSurfaceHandle(

[Charlie Reis, 2015/08/31 19:02:51]

Please leave a comment so others will understand why this is needed.

[lfg, 2015/09/02 00:32:17]

Done.

+        surface_id(),
+        gfx::GLSurfaceHandle(gfx::kNullPluginWindow, gfx::NULL_TRANSPORT));
+  }
 
   // Ensure the RenderView starts with a next_page_id larger than any existing
   // page ID it might be asked to render.