Move Extension into extensions namespace

chrome/browser/ui/browser_dialogs.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.
 
 #ifndef CHROME_BROWSER_UI_BROWSER_DIALOGS_H_
 #define CHROME_BROWSER_UI_BROWSER_DIALOGS_H_
 #pragma once
 
 #include "ipc/ipc_message.h"
 #include "ui/gfx/native_widget_types.h"
 
 class Browser;
-class Extension;
 class Profile;
 class SkBitmap;
 class TabContentsWrapper;
 class TabModalConfirmDialogDelegate;
 class TemplateURL;
 class WebDialogDelegate;
 
 namespace content {
 class WebContents;
 }
 
+namespace extensions {
+class Extension;
+}
+
 namespace browser {
 
 #if defined(IPC_MESSAGE_LOG_ENABLED)
 
 // The dialog is a singleton. If the dialog is already opened, it won't do
 // anything, so you can just blindly call this function all you want.
 // This is Called from chrome/browser/browser_about_handler.cc
 void ShowAboutIPCDialog();
 
 #endif  // IPC_MESSAGE_LOG_ENABLED
@@ skipping 12 matching lines @@
                                 WebDialogDelegate* delegate);
 
 // Shows the collected cookies dialog box.
 void ShowCollectedCookiesDialog(gfx::NativeWindow parent_window,
                                 TabContentsWrapper* tab_contents);
 
 // Creates the ExtensionInstalledBubble and schedules it to be shown once
 // the extension has loaded. |extension| is the installed extension. |browser|
 // is the browser window which will host the bubble. |icon| is the install
 // icon of the extension.
-void ShowExtensionInstalledBubble(const Extension* extension,
+void ShowExtensionInstalledBubble(const extensions::Extension* extension,
                                   Browser* browser,
                                   const SkBitmap& icon,
                                   Profile* profile);
 
 // Shows or hide the hung renderer dialog for the given WebContents.
 // We need to pass the WebContents to the dialog, because multiple tabs can hang
 // and it needs to keep track of which tabs are currently hung.
 void ShowHungRendererDialog(content::WebContents* contents);
 void HideHungRendererDialog(content::WebContents* contents);
 
 // Shows a tab-modal dialog box.
 void ShowTabModalConfirmDialog(TabModalConfirmDialogDelegate* delegate,
                                TabContentsWrapper* wrapper);
 
 }  // namespace browser
 
 #endif  // CHROME_BROWSER_UI_BROWSER_DIALOGS_H_