Call DidStartNavigationToPendingEntry with correct argument.

Calling it with render_frame_host is wrong because that object
might have been deleted above. Only dest_render_frame_host is valid
at this point.

BUG=393032
TBR=nasko

Review URL: https://codereview.chromium.org/380413002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@282796 0039d316-1c4b-4281-b951-d872f2087c98

content/browser/frame_host/navigator_impl.cc

@@ -388,7 +388,7 @@ bool NavigatorImpl::NavigateToEntry(
 
   // Notify observers about navigation.
   if (delegate_) {
-    delegate_->DidStartNavigationToPendingEntry(render_frame_host,
+    delegate_->DidStartNavigationToPendingEntry(dest_render_frame_host,
                                                 entry.GetURL(),
                                                 reload_type);
   }