Plumb opener information when creating RenderFrames and RenderFrameProxies for subframes.

content/renderer/render_frame_proxy.h

Index: content/renderer/render_frame_proxy.h
diff --git a/content/renderer/render_frame_proxy.h b/content/renderer/render_frame_proxy.h
index 2ab747ba2a616af10416c72444344a538d006303..42f53702d343eae069e9c402db84d86ba4259392 100644
--- a/content/renderer/render_frame_proxy.h
+++ b/content/renderer/render_frame_proxy.h
@@ -76,8 +76,9 @@ class CONTENT_EXPORT RenderFrameProxy
   // new frame local to some other process. |routing_id| will be the ID of the
   // newly created RenderFrameProxy. |parent_routing_id| is the routing ID of
   // the RenderFrameProxy to which the new frame is parented.
-  // |render_view_routing_id| identifies the RenderView to be associated with
-  // this frame.
+  // |opener_routing_id|, if valid, is the routing ID of the new frame's
+  // opener. |render_view_routing_id| identifies the RenderView to be
+  // associated with this frame.
   //
   // |parent_routing_id| always identifies a RenderFrameProxy (never a
   // RenderFrame) because a new child of a local frame should always start out
@@ -85,6 +86,7 @@ class CONTENT_EXPORT RenderFrameProxy
   static RenderFrameProxy* CreateFrameProxy(
       int routing_id,
       int parent_routing_id,
+      int opener_routing_id,
       int render_view_routing_id,
       const FrameReplicationState& replicated_state);