Add LogOut method to GaiaCookieManagerService::Observer.

components/signin/core/browser/gaia_cookie_manager_service.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_GAIA_COOKIE_MANAGER_SERVICE_H_
 #define COMPONENTS_SIGNIN_CORE_BROWSER_GAIA_COOKIE_MANAGER_SERVICE_H_
 
 #include <deque>
 #include <map>
 #include <memory>
@@ skipping 62 matching lines @@
 
     GaiaCookieRequestType request_type_;
     std::string account_id_;
     std::string source_;
   };
 
   class Observer {
    public:
     // Called whenever a merge session is completed.  The account that was
     // merged is given by |account_id|.  If |error| is equal to
-    // GoogleServiceAuthError::AuthErrorNone() then the merge succeeeded.
+    // GoogleServiceAuthError::AuthErrorNone() then the merge succeeded.
     virtual void OnAddAccountToCookieCompleted(
         const std::string& account_id,
         const GoogleServiceAuthError& error) {}
 
+    // Called whenever a logout is completed. If |error| is equal to
+    // GoogleServiceAuthError::AuthErrorNone() then the logout succeeded.
+    virtual void OnLogOutAccountsFromCookieCompleted(
+        const GoogleServiceAuthError& error) {}
+
     // Called whenever the GaiaCookieManagerService's list of GAIA accounts is
     // updated. The GCMS monitors the APISID cookie and triggers a /ListAccounts
     // call on change. The GCMS will also call ListAccounts upon the first call
     // to ListAccounts(). The GCMS will delay calling ListAccounts if other
     // requests are in queue that would modify the APISID cookie.
     // If the ListAccounts call fails and the GCMS cannot recover, the reason
     // is passed in |error|.
     virtual void OnGaiaAccountsInCookieUpdated(
         const std::vector<gaia::ListedAccount>& accounts,
         const std::vector<gaia::ListedAccount>& signed_out_accounts,
@@ skipping 218 matching lines @@
 
   std::vector<gaia::ListedAccount> listed_accounts_;
   std::vector<gaia::ListedAccount> signed_out_accounts_;
 
   bool list_accounts_stale_;
 
   DISALLOW_COPY_AND_ASSIGN(GaiaCookieManagerService);
 };
 
 #endif  // COMPONENTS_SIGNIN_CORE_BROWSER_GAIA_COOKIE_MANAGER_SERVICE_H_