Implement newly designed sign-in related histograms for desktop platorms.

chrome/browser/ui/zoom/zoom_controller_browsertest.cc

 // Copyright 2014 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 "components/ui/zoom/zoom_controller.h"
 
 #include "base/prefs/pref_service.h"
 #include "base/process/kill.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
@@ skipping 258 matching lines @@
 
 // Regression test: crbug.com/450909.
 IN_PROC_BROWSER_TEST_F(ZoomControllerBrowserTest, NavigationResetsManualMode) {
   TestResetOnNavigation(ZoomController::ZOOM_MODE_MANUAL);
 }
 
 #if !defined(OS_CHROMEOS)
 // Regression test: crbug.com/438979.
 IN_PROC_BROWSER_TEST_F(ZoomControllerBrowserTest,
                        SettingsZoomAfterSigninWorks) {
-  GURL signin_url(
-      std::string(chrome::kChromeUIChromeSigninURL).append("?source=0"));
+  GURL signin_url(std::string(chrome::kChromeUIChromeSigninURL)
+                      .append("?access_point=0&reason=0"));
   // We open the signin page in a new tab so that the ZoomController is
   // created against the HostZoomMap of the special StoragePartition that
   // backs the signin page. When we subsequently navigate away from the
   // signin page, the HostZoomMap changes, and we need to test that the
   // ZoomController correctly detects this.
   ui_test_utils::NavigateToURLWithDisposition(
       browser(), signin_url, NEW_FOREGROUND_TAB,
       ui_test_utils::BROWSER_TEST_WAIT_FOR_NAVIGATION);
   login_ui_test_utils::WaitUntilUIReady(browser());
   content::WebContents* web_contents =
@@ skipping 43 matching lines @@
       web_contents,
       old_zoom_level,
       new_zoom_level,
       ZoomController::ZOOM_MODE_DEFAULT,
       true);  // We have a non-empty host, so this will be 'true'.
   ZoomChangedWatcher zoom_change_watcher(web_contents, zoom_change_data);
   zoom_controller->SetZoomLevel(new_zoom_level);
   zoom_change_watcher.Wait();
 }
 #endif  // !defined(OS_CHROMEOS)