fix($location): re-assign location after BFCache back

src/ng/browser.js

@@ -148,6 +148,9 @@ function Browser(window, document, $log, $sniffer) {
    * @param {boolean=} replace Should new url replace current history record ?
    */
   self.url = function(url, replace) {
+    // Android Browser BFCache causes location reference to become stale.
+    if (location !== window.location) location = window.location;
+
     // setter
     if (url) {
       if (lastBrowserUrl == url) return;