Treat loads of invalid URLs as no-ops unless triggered by window.open.

ios/testing/data/http_server_files/window_location.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Adds event listeners and populates on-load-div.
 window.onload = function() {
   updateOnLoadText('OnLoadText');
 };
 
 var updateOnLoadText = function(text) {
   document.getElementById('on-load-div').innerHTML = text;
 }
 
+var updateNoOpText = function() {
+  document.getElementById('no-op').innerHTML = 'NoOpText';
+}
+
+var buttonWasTapped = function() {
+  setTimeout(updateNoOpText, 500);
+}
+
 var isOnLoadTextVisible = function() {
   return document.getElementById('on-load-div').innerHTML == 'OnLoadText';
 }
 
+var isNoOpTextVisible = function() {
+  return document.getElementById('no-op').innerHTML == 'NoOpText';
+}
+
 // Updates the url-to-load div with |text|.  This value is later used by the
 // window.location calls below.
 var updateUrlToLoadText = function(text) {
   document.getElementById('url-to-load').innerHTML = text;
 }
 
 // Returns a DOMString representing the URL used as the innerHTML of the
 // url-to-load div.
 var getUrl = function() {
   return document.getElementById('url-to-load').innerHTML;
 }
 
 var locationAssign = function() {
   updateOnLoadText('');
   window.location.assign(getUrl());
+  buttonWasTapped();

[Eugene But (OOO till 7-30), 2017/04/06 18:34:19]

|locationAssign| and other methods are named in generic way w/o implying button
tapping. How about renaming |buttonWasTapped| to updateNoOpTextAfterTimeout ?
Alternatively we could rename locationAssign -> locationAssignButtonTapped

[kkhorimoto, 2017/04/07 00:03:40]

Done.

 }
 
 var locationReplace = function() {
   updateOnLoadText('');
   window.location.replace(getUrl());
+  buttonWasTapped();
 }
 
 var locationReload = function() {
   updateOnLoadText('');
   window.location.reload();
+  buttonWasTapped();
 }
 
 var setLocationToDOMString = function() {
   updateOnLoadText('');
   window.location = getUrl();
+  buttonWasTapped();
 }