<webview>: Context menu API implementation CL.

chrome/browser/extensions/event_names.cc

 // 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.
 
 #include "chrome/browser/extensions/event_names.h"
 
 namespace extensions {
 
 namespace event_names {
 
 const char kOnInputMethodChanged[] = "inputMethodPrivate.onChanged";
 
 const char kOnContextMenus[] = "contextMenus";
+const char kOnWebviewContextMenus[] = "webview.contextMenus";
 
 const char kOnNotificationError[] = "notifications.onError";
 
 }  // namespace event_names
 
 }  // namespace extensions