Plumb opener information when creating RenderFrames and RenderFrameProxies for subframes.

content/renderer/render_frame_impl.h

Index: content/renderer/render_frame_impl.h
diff --git a/content/renderer/render_frame_impl.h b/content/renderer/render_frame_impl.h
index ba49c52e4c9a99839cca929742f0b1f501cbc85b..7a84b263f040788ac4e99250557d7d72a2164434 100644
--- a/content/renderer/render_frame_impl.h
+++ b/content/renderer/render_frame_impl.h
@@ -143,13 +143,15 @@ class CONTENT_EXPORT RenderFrameImpl
   // identified by |previous_sibling_routing_id|, or as the first child if
   // |previous_sibling_routing_id| is MSG_ROUTING_NONE. Otherwise, the frame is
   // semi-orphaned until it commits, at which point it replaces the proxy
-  // identified by |proxy_routing_id|. Note: This is called only when
+  // identified by |proxy_routing_id|.  The frame's opener is set to the frame
+  // identified by |opener_routing_id|.  Note: This is called only when
   // RenderFrame is being created in response to IPC message from the browser
   // process. All other frame creation is driven through Blink and Create.
   static void CreateFrame(int routing_id,
                           int parent_routing_id,
                           int previous_sibling_routing_id,
                           int proxy_routing_id,
+                          int opener_routing_id,
                           const FrameReplicationState& replicated_state,
                           CompositorDependencies* compositor_deps,
                           const FrameMsg_NewFrame_WidgetParams& params);