[Extensions] Clean up some Permission[sData|Set] includes

extensions/common/permissions/permissions_data.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 EXTENSIONS_COMMON_PERMISSIONS_PERMISSIONS_DATA_H_
 #define EXTENSIONS_COMMON_PERMISSIONS_PERMISSIONS_DATA_H_
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 #include "base/synchronization/lock.h"
-#include "extensions/common/extension.h"
 #include "extensions/common/manifest.h"
 #include "extensions/common/permissions/api_permission.h"
 #include "extensions/common/permissions/permission_message.h"
 #include "extensions/common/permissions/permission_set.h"
 
 class GURL;
 
 namespace extensions {
-
-class PermissionSet;
 class Extension;
 class URLPatternSet;
-class UserScript;
 
-// A container for the active permissions of an extension.
-// TODO(rdevlin.cronin): For the love of everything good, rename this class to
-// ActivePermissions. We do *not* need PermissionsParser, PermissionSet,
-// PermissionInfo, and PermissionsData. No one will be able to keep them
-// straight.
+// A container for the permissions state of an extension, including active,
+// withheld, and tab-specific permissions.
 class PermissionsData {
  public:
   // The possible types of access for a given frame.
   enum AccessType {
     ACCESS_DENIED,   // The extension is not allowed to access the given page.
     ACCESS_ALLOWED,  // The extension is allowed to access the given page.
     ACCESS_WITHHELD  // The browser must determine if the extension can access
                      // the given page.
   };
 
@@ skipping 222 matching lines @@
   mutable scoped_refptr<const PermissionSet> withheld_permissions_unsafe_;
 
   mutable TabPermissionsMap tab_specific_permissions_;
 
   DISALLOW_COPY_AND_ASSIGN(PermissionsData);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_COMMON_PERMISSIONS_PERMISSIONS_DATA_H_