Setup field trial for one-click signin inforbar.

chrome/browser/ui/sync/one_click_signin_helper.h

 // Copyright (c) 2012 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.
 
 #ifndef CHROME_BROWSER_UI_SYNC_ONE_CLICK_SIGNIN_HELPER_H_
 #define CHROME_BROWSER_UI_SYNC_ONE_CLICK_SIGNIN_HELPER_H_
 
 #include <string>
 
 #include "content/public/browser/web_contents_observer.h"
@@ skipping 16 matching lines @@
   // Returns true if the one-click signin feature can be offered at this time.
   // It can be offered if the contents is not in an incognito window.  If
   // |check_connected| is true, then the profile is checked to see if it's
   // already connected to a google account or if the user has already rejected
   // one-click sign-in with this email, in which cases a one click signin
   // should not be offered.
   static bool CanOffer(content::WebContents* web_contents,
                        const std::string& email,
                        bool check_connected);
 
+  // Initialize a finch experiment for the infobar.
+  static void InitializeFieldTrial();

[Peter Kasting, 2012/09/11 23:02:07]

Random drive-by nit: The Google style guide says static methods should be below
the constructor rather than above.

[Roger Tawa OOO till Jul 10th, 2012/09/12 15:07:14]

Done.

+
   // Looks for the Google-Accounts-SignIn response header, and if found,
   // tries to display an infobar in the tab contents identified by the
   // child/route id.
   static void ShowInfoBarIfPossible(net::URLRequest* request,
                                     int child_id,
                                     int route_id);
 
   explicit OneClickSigninHelper(content::WebContents* web_contents);
   virtual ~OneClickSigninHelper();
 
@@ skipping 20 matching lines @@
 
   // Information about the account that has just logged in.
   std::string session_index_;
   std::string email_;
   std::string password_;
 
   DISALLOW_COPY_AND_ASSIGN(OneClickSigninHelper);
 };
 
 #endif  // CHROME_BROWSER_UI_SYNC_ONE_CLICK_SIGNIN_HELPER_H_