Revert of [Extensions] Make extension message bubble factory platform-abstract

chrome/browser/ui/extensions/extension_message_bubble_factory.h

-// Copyright 2015 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_EXTENSIONS_EXTENSION_MESSAGE_BUBBLE_FACTORY_H_
-#define CHROME_BROWSER_UI_EXTENSIONS_EXTENSION_MESSAGE_BUBBLE_FACTORY_H_
-
-#include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
-
-class Profile;
-
-namespace extensions {
-class ExtensionMessageBubbleController;
-}  // namespace extensions
-
-// Create and show ExtensionMessageBubbles for either extensions that look
-// suspicious and have therefore been disabled, or for extensions that are
-// running in developer mode that we want to warn the user about.
-class ExtensionMessageBubbleFactory {
- public:
-  explicit ExtensionMessageBubbleFactory(Profile* profile);
-  ~ExtensionMessageBubbleFactory();
-
-  // Returns the controller for the bubble that should be shown, if any.
-  scoped_ptr<extensions::ExtensionMessageBubbleController> GetController();
-
- private:
-  Profile* profile_;
-
-  DISALLOW_COPY_AND_ASSIGN(ExtensionMessageBubbleFactory);
-};
-
-#endif  // CHROME_BROWSER_UI_EXTENSIONS_EXTENSION_MESSAGE_BUBBLE_FACTORY_H_