chrome: Cleanup class/struct forward declarations

chrome/browser/extensions/extension_tab_util.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_EXTENSIONS_EXTENSION_TAB_UTIL_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_TAB_UTIL_H_
 
 #include <memory>
 #include <string>
 
 #include "base/callback.h"
 #include "chrome/common/extensions/api/tabs.h"
 #include "ui/base/window_open_disposition.h"
 
 class Browser;
 class ChromeExtensionFunctionDetails;
 class ChromeUIThreadExtensionFunction;
-class ExtensionFunction;
 class GURL;
-class Profile;
 class TabStripModel;
 class UIThreadExtensionFunction;
 
 namespace base {
 class DictionaryValue;
 class ListValue;
 }
 
 namespace content {
 class BrowserContext;
@@ skipping 144 matching lines @@
   static bool OpenOptionsPage(const Extension* extension, Browser* browser);
 
   // Returns true if the given Browser can report tabs to extensions.
   // Example of Browsers which don't support tabs include apps and devtools.
   static bool BrowserSupportsTabs(Browser* browser);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_TAB_UTIL_H_