Add browser test to the sharing dialog feature in Files.app.

chrome/browser/resources/file_manager/js/share_dialog.js

 // Copyright 2013 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.
 
 'use strict';
 
 /**
  * @param {HTMLElement} parentNode Node to be parent for this dialog.
  * @constructor
  * @extends {cr.ui.dialogs.BaseDialog}
@@ skipping 38 matching lines @@
  * @param {function()} callback Completion callback.
  */
 ShareDialog.WebViewAuthorizer.prototype.initialize = function(callback) {
   if (this.initialized_) {
     callback();
     return;
   }
 
   var registerInjectionHooks = function() {
     this.webView_.removeEventListener('loadstop', registerInjectionHooks);
+    var pattern = (this.origin_ == '<all_urls>') ? this.origin_ :
+                                                   this.origin_ + '/*';
     this.webView_.onBeforeSendHeaders.addListener(
       this.authorizeRequest_.bind(this),
-      {urls: [this.origin_ + '/*']},
+      {urls: [pattern]},
       ['blocking', 'requestHeaders']);
     this.initialized_ = true;
     callback();
   }.bind(this);
 
   this.webView_.addEventListener('loadstop', registerInjectionHooks);
   this.webView_.setAttribute('src', 'data:text/html,');
 };
 
 /**
@@ skipping 139 matching lines @@
     this.failureTimeout_ = setTimeout(function() {
       onError();
     }, ShareDialog.FAILURE_TIMEOUT);
 
     // TODO(mtomasz): Move to initDom_() once and reuse <webview> once it gets
     // fixed. See: crbug.com/260622.
     this.webView_ = util.createChild(
         this.webViewWrapper_, 'share-dialog-webview', 'webview');
     this.webView_.setAttribute('tabIndex', '-1');
     this.webViewAuthorizer_ = new ShareDialog.WebViewAuthorizer(
-        ShareClient.SHARE_TARGET, this.webView_);
+        !window.IN_TEST ? ShareClient.SHARE_TARGET : '<all_urls>',
+        this.webView_);
     this.webView_.addEventListener('newwindow', function(e) {
       // Discard the window object and reopen in an external window.
       e.window.discard();
       chrome.windows.create({url: e.targetUrl});
       e.preventDefault();
     });
-
     cr.ui.dialogs.BaseDialog.prototype.show.call(this, '', null, null, null);
 
     // Initialize and authorize the Web View tag asynchronously.
     var group = new AsyncUtil.Group();
 
     // Fetches an url to the sharing dialog.
     var shareUrl;
     var getShareUrlClosure = function(callback) {
       chrome.fileBrowserPrivate.getShareUrl(
           entry.toURL(),
@@ skipping 25 matching lines @@
   }.bind(this));
 };
 
 /**
  * Tells whether the share dialog is being shown or not.
  * @return {boolean} True if shown, false otherwise.
  */
 ShareDialog.prototype.isShowing = function() {
   return this.container_.classList.contains('shown');
 };