Added merge session request throttle for XHR requests

chrome/browser/chromeos/login/merge_session_load_page_unittest.cc

 // Copyright (c) 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.
 
 #include "base/run_loop.h"
 #include "base/time/time.h"
 #include "chrome/browser/chromeos/login/merge_session_load_page.h"
 #include "chrome/browser/chromeos/login/oauth2_login_manager.h"
 #include "chrome/browser/chromeos/login/oauth2_login_manager_factory.h"
 #include "chrome/browser/chromeos/login/user_manager.h"
@@ skipping 21 matching lines @@
 namespace chromeos {
 
 class MergeSessionLoadPageTest;
 
 // An MergeSessionLoadPage class that does not create windows.
 class TestMergeSessionLoadPage :  public MergeSessionLoadPage {
  public:
   TestMergeSessionLoadPage(WebContents* web_contents,
                            const GURL& url,
                            MergeSessionLoadPageTest* test_page)
-    : MergeSessionLoadPage(web_contents, url, CompletionCallback()),
+    : MergeSessionLoadPage(web_contents,
+                           url,
+                           MergeSessionThrottle::CompletionCallback()),
       test_page_(test_page) {
     interstitial_page_->DontCreateViewForTesting();
   }
 
  private:
   MergeSessionLoadPageTest* test_page_;
 
   DISALLOW_COPY_AND_ASSIGN(TestMergeSessionLoadPage);
 };
 
@@ skipping 119 matching lines @@
 
   // The URL remains to be URL2.
   EXPECT_EQ(kURL2, web_contents()->GetVisibleURL().spec());
 
   // Commit navigation and the interstitial page is gone.
   Navigate(kURL2, 2);
   EXPECT_FALSE(GetMergeSessionLoadPage());
 }
 
 }  // namespace chromeos