Reverting this as it causes browser tests on the Linux ChromiumOS builder to fail.

chrome/browser/signin/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.
 //
 // The signin manager encapsulates some functionality tracking
 // which user is signed in. When a user is signed in, a ClientLogin
 // request is run on their behalf. Auth tokens are fetched from Google
 // and the results are stored in the TokenService.
 //
 // **NOTE** on semantics of SigninManager:
@@ skipping 122 matching lines @@
       const GoogleServiceAuthError& error) OVERRIDE;
   virtual void OnGetUserInfoSuccess(const UserInfoMap& data) OVERRIDE;
   virtual void OnGetUserInfoFailure(
       const GoogleServiceAuthError& error) OVERRIDE;
 
   // content::NotificationObserver
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
- protected:
-  // Weak pointer to parent profile (protected so FakeSigninManager can access
-  // it).
-  Profile* profile_;
-
  private:
   enum SigninType {
     SIGNIN_TYPE_NONE,
     SIGNIN_TYPE_CLIENT_LOGIN,
     SIGNIN_TYPE_WITH_CREDENTIALS,
     SIGNIN_TYPE_CLIENT_OAUTH,
   };
 
   friend class FakeSigninManager;
   FRIEND_TEST_ALL_PREFIXES(SigninManagerTest, ClearTransientSigninData);
@@ skipping 13 matching lines @@
   // Will clear in memory data but leaves the db as such so when the browser
   // restarts we can use the old token(which might throw a password error).
   void ClearTransientSigninData();
 
   // Called to handle an error from a GAIA auth fetch.  Sets the last error
   // to |error|, sends out a notification of login failure, and clears the
   // transient signin data if |clear_transient_data| is true.
   void HandleAuthError(const GoogleServiceAuthError& error,
                        bool clear_transient_data);
 
+  Profile* profile_;
+
   // ClientLogin identity.
   std::string possibly_invalid_username_;
   std::string password_;  // This is kept empty whenever possible.
   bool had_two_factor_error_;
 
   void CleanupNotificationRegistration();
 
   // Result of the last client login, kept pending the lookup of the
   // canonical email.
   ClientLoginResult last_result_;
@@ skipping 13 matching lines @@
 
   // The type of sign being performed.  This value is valid only between a call
   // to one of the StartSigninXXX methods and when the sign in is either
   // successful or not.
   SigninType type_;
 
   DISALLOW_COPY_AND_ASSIGN(SigninManager);
 };
 
 #endif  // CHROME_BROWSER_SIGNIN_SIGNIN_MANAGER_H_