Componentize SigninIdAccountHelper.

components/signin/core/browser/signin_client.h

 // 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.
 
 #ifndef COMPONENTS_SIGNIN_CORE_BROWSER_SIGNIN_CLIENT_H_
 #define COMPONENTS_SIGNIN_CORE_BROWSER_SIGNIN_CLIENT_H_
 
 #include "components/signin/core/browser/webdata/token_web_data.h"
 
 class PrefService;
+class SigninManagerBase;
 class TokenWebData;
 
 namespace net {
 class URLRequestContextGetter;
 }
 
 // An interface that needs to be supplied to the Signin component by its
 // embedder.
 class SigninClient {
  public:
   virtual ~SigninClient() {}
 
   // Gets the preferences associated with the client.
   virtual PrefService* GetPrefs() = 0;
 
   // Gets the TokenWebData instance associated with the client.
   virtual scoped_refptr<TokenWebData> GetDatabase() = 0;
 
   // Returns whether it is possible to revoke credentials.
   virtual bool CanRevokeCredentials() = 0;
 
   // Returns the URL request context information associated with the client.
   virtual net::URLRequestContextGetter* GetURLRequestContext() = 0;
+
+  // Called when Google signin has succeeded.
+  virtual void GoogleSigninSucceeded(const std::string& username,
+                                     const std::string& password) {}
 };
 
 #endif  // COMPONENTS_SIGNIN_CORE_BROWSER_SIGNIN_CLIENT_H_