OOPIF: report both original and destination rfh in AboutToNavigateRenderFrame.

content/browser/frame_host/navigator_impl.cc

Index: content/browser/frame_host/navigator_impl.cc
diff --git a/content/browser/frame_host/navigator_impl.cc b/content/browser/frame_host/navigator_impl.cc
index 0bd424ab69e3e71dd2096589be17c5d968350741..ed62ba2457c0cdd163cb43af2a87f9ee6e7a4dbf 100644
--- a/content/browser/frame_host/navigator_impl.cc
+++ b/content/browser/frame_host/navigator_impl.cc
@@ -415,8 +415,10 @@ bool NavigatorImpl::NavigateToEntry(
       dest_render_frame_host, entry.GetURL());
 
   // Notify observers that we will navigate in this RenderFrame.
-  if (delegate_)
-    delegate_->AboutToNavigateRenderFrame(dest_render_frame_host);
+  if (delegate_) {
+    delegate_->AboutToNavigateRenderFrame(render_frame_host,
+                                          dest_render_frame_host);
+  }
 
   // Create the navigation parameters.
   // TODO(vitalybuka): Move this before AboutToNavigateRenderFrame once