Reland: Communicate ExtensionSettings policy to renderers

extensions/common/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 EXTENSIONS_COMMON_EXTENSION_H_
 #define EXTENSIONS_COMMON_EXTENSION_H_
 
 #include <map>
 #include <memory>
 #include <set>
@@ skipping 524 matching lines @@
   const Extension* extension;
 
   UnloadedExtensionInfo(const Extension* extension, Reason reason);
 };
 
 // The details sent for EXTENSION_PERMISSIONS_UPDATED notifications.
 struct UpdatedExtensionPermissionsInfo {
   enum Reason {
     ADDED,    // The permissions were added to the extension.
     REMOVED,  // The permissions were removed from the extension.
+    POLICY,   // The policy that affects permissions was updated.
   };
 
   Reason reason;
 
   // The extension who's permissions have changed.
   const Extension* extension;
 
   // The permissions that have changed. For Reason::ADDED, this would contain
   // only the permissions that have added, and for Reason::REMOVED, this would
   // only contain the removed permissions.
   const PermissionSet& permissions;
 
   UpdatedExtensionPermissionsInfo(const Extension* extension,
                                   const PermissionSet& permissions,
                                   Reason reason);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_COMMON_EXTENSION_H_