OOPIF: report both original and destination rfh in AboutToNavigateRenderFrame.

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index 73020c14c7ff090c539c9b6d095f5fd5d1ac839a..3a679c64453e87cdd64c927994221c7e52d01ceb 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -2562,12 +2562,13 @@ void WebContentsImpl::NotifyChangedNavigationState(
 }
 
 void WebContentsImpl::AboutToNavigateRenderFrame(
-      RenderFrameHostImpl* render_frame_host) {
+      RenderFrameHostImpl* old_host,
+      RenderFrameHostImpl* new_host) {
   // Notify observers that we will navigate in this RenderFrame.
   FOR_EACH_OBSERVER(
       WebContentsObserver,
       observers_,
-      AboutToNavigateRenderFrame(render_frame_host));
+      AboutToNavigateRenderFrame(old_host, new_host));
 }
 
 void WebContentsImpl::DidStartNavigationToPendingEntry(