Move multiple UI surfaces check to PageActionHandler.

chrome/common/extensions/extension.h

 // Copyright (c) 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_COMMON_EXTENSIONS_EXTENSION_H_
 #define CHROME_COMMON_EXTENSIONS_EXTENSION_H_
 
 #include <algorithm>
 #include <iosfwd>
 #include <map>
@@ skipping 383 matching lines @@
                   const char* list_error,
                   const char* value_error,
                   string16* error);
   bool LoadLaunchContainer(string16* error);
   bool LoadLaunchURL(string16* error);
 
   bool LoadSharedFeatures(string16* error);
   bool LoadDescription(string16* error);
   bool LoadManifestVersion(string16* error);
 
-  // Returns true if the extension has more than one "UI surface". For example,
-  // an extension that has a browser action and a page action.
-  bool HasMultipleUISurfaces() const;
-
   // Updates the launch URL and extents for the extension using the given
   // |override_url|.
   void OverrideLaunchUrl(const GURL& override_url);
 
   bool CheckMinimumChromeVersion(string16* error) const;
 
   // Check that platform app features are valid. Called after InitFromValue.
   bool CheckPlatformAppFeatures(string16* error) const;
 
   // Check that features don't conflict. Called after InitFromValue.
@@ skipping 164 matching lines @@
 
   UpdatedExtensionPermissionsInfo(
       const Extension* extension,
       const PermissionSet* permissions,
       Reason reason);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_COMMON_EXTENSIONS_EXTENSION_H_