When a page is reloaded using the original request URL, ensure that the RVH picked to render it is based on that URL and WebContentsObserver::NavigateToPendingEntry sees that new URL.

BUG=306569,112923
R=creis@chromium.org

Review URL: https://codereview.chromium.org/27045005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@228418 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 228418