Make ProfileSigninConfirmationHelper delete itself instead of being refcounted.

chrome/browser/ui/sync/profile_signin_confirmation_helper.h

 // Copyright 2013 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_PROFILE_SIGNIN_CONFIRMATION_HELPER_H_
 #define CHROME_BROWSER_UI_SYNC_PROFILE_SIGNIN_CONFIRMATION_HELPER_H_
 
 #include "base/callback.h"
 #include "third_party/skia/include/core/SkColor.h"
 
 class Profile;
 
 namespace ui {
 
 // Blend parameters for the dialog prompt bar.
 const SkAlpha kSigninConfirmationPromptBarBackgroundAlpha = 0x0A;
 const SkAlpha kSigninConfirmationPromptBarBorderAlpha = 0x1F;
 
 // Create slightly different colors for the dialog prompt bar.
 SkColor GetSigninConfirmationPromptBarColor(SkAlpha alpha);
 
 // Determines whether the browser has ever been shutdown since the
 // profile was created.
+// Exposed for testing.
 bool HasBeenShutdown(Profile* profile);
 
 // Determines whether there are any synced extensions installed (that
 // shouldn't be ignored).
+// Exposed for testing.
 bool HasSyncedExtensions(Profile* profile);
 
 // Determines whether the user should be prompted to create a new
 // profile before signin.
 void CheckShouldPromptForNewProfile(
     Profile* profile,
     const base::Callback<void(bool)>& cb);
 
 // Handles user input from confirmation dialog.
 class ProfileSigninConfirmationDelegate {
  public:
   virtual void OnCancelSignin() = 0;
   virtual void OnContinueSignin() = 0;
   virtual void OnSigninWithNewProfile() = 0;
 };
 
 }  // namespace ui
 
 #endif  // CHROME_BROWSER_UI_SYNC_PROFILE_SIGNIN_CONFIRMATION_HELPER_H_