Prepare RenderFrameProxy for mirroring the frame tree

content/renderer/child_frame_compositing_helper.cc

Index: content/renderer/child_frame_compositing_helper.cc
diff --git a/content/renderer/child_frame_compositing_helper.cc b/content/renderer/child_frame_compositing_helper.cc
index 8790ae2d8a82e5434e0bff9d509f569200799aa9..f4b3318f35fae69bfeb6e0ae48823649b3bc0a63 100644
--- a/content/renderer/child_frame_compositing_helper.cc
+++ b/content/renderer/child_frame_compositing_helper.cc
@@ -48,12 +48,11 @@ ChildFrameCompositingHelper::CreateCompositingHelperForBrowserPlugin(
 
 ChildFrameCompositingHelper*
 ChildFrameCompositingHelper::CreateCompositingHelperForRenderFrame(
-    blink::WebFrame* frame,
-    RenderFrameProxy* render_frame_proxy,
-    int host_routing_id) {
-  return new ChildFrameCompositingHelper(
-      base::WeakPtr<BrowserPlugin>(), frame, render_frame_proxy,
-      host_routing_id);
+    RenderFrameProxy* render_frame_proxy) {
+  return new ChildFrameCompositingHelper(base::WeakPtr<BrowserPlugin>(),
+                                         render_frame_proxy->web_frame(),
+                                         render_frame_proxy,
+                                         render_frame_proxy->routing_id());
 }
 
 ChildFrameCompositingHelper::ChildFrameCompositingHelper(