Remove SigninManager::StartSignIn() since /ClientLogin is no longer used.

chrome/browser/signin/fake_signin_manager.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_SIGNIN_FAKE_SIGNIN_MANAGER_H_
 #define CHROME_BROWSER_SIGNIN_FAKE_SIGNIN_MANAGER_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 23 matching lines @@
  public:
   explicit FakeSigninManager(Profile* profile);
   virtual ~FakeSigninManager();
 
   void set_auth_in_progress(const std::string& username) {
     possibly_invalid_username_ = username;
   }
 
   virtual void SignOut() OVERRIDE;
   virtual void InitTokenService() OVERRIDE;
-  virtual void StartSignIn(const std::string& username,
-                           const std::string& password,
-                           const std::string& login_token,
-                           const std::string& login_captcha) OVERRIDE;
 
   virtual void StartSignInWithCredentials(
       const std::string& session_index,
       const std::string& username,
       const std::string& password,
       const OAuthTokenFetchedCallback& oauth_fetched_callback) OVERRIDE;
 
   virtual void CompletePendingSignin() OVERRIDE;
 
   // Helper function to be used with
   // BrowserContextKeyedService::SetTestingFactory().
   static BrowserContextKeyedService* Build(content::BrowserContext* profile);
 };
 
 #endif  // !defined (OS_CHROMEOS)
 
 #endif  // CHROME_BROWSER_SIGNIN_FAKE_SIGNIN_MANAGER_H_