Add a centralized mechanism for whitelisting access to extension permissions.

chrome/common/extensions/extension.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_COMMON_EXTENSIONS_EXTENSION_H_
 #define CHROME_COMMON_EXTENSIONS_EXTENSION_H_
 #pragma once
 
 #include <map>
 #include <set>
@@ skipping 689 matching lines @@
   // 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);
 
   // Returns true if this extension can specify |api|.
   bool CanSpecifyAPIPermission(const ExtensionAPIPermission* api,
                                string16* error) const;
-  bool CanSpecifyComponentOnlyPermission() const;
   bool CanSpecifyExperimentalPermission() const;
 
   // Checks whether the host |pattern| is allowed for this extension, given API
   // permissions |permissions|.
   bool CanSpecifyHostPermission(const URLPattern& pattern,
       const ExtensionAPIPermissionSet& permissions) const;
 
   // Cached images for this extension. This should only be touched on the UI
   // thread.
   mutable ImageCache image_cache_;
@@ skipping 237 matching lines @@
   // only contain the removed permissions.
   const ExtensionPermissionSet* permissions;
 
   UpdatedExtensionPermissionsInfo(
       const Extension* extension,
       const ExtensionPermissionSet* permissions,
       Reason reason);
 };
 
 #endif  // CHROME_COMMON_EXTENSIONS_EXTENSION_H_