IsCommandIdEnabled should not fall though if the base did handle the command id

chrome/browser/renderer_context_menu/render_view_context_menu.cc

 // Copyright 2014 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/renderer_context_menu/render_view_context_menu.h"
 
 #include <algorithm>
 #include <set>
 #include <utility>
 
@@ skipping 935 matching lines @@
 
   menu_model_.AddSubMenu(
       IDC_CONTENT_CONTEXT_OPENLINKWITH,
       l10n_util::GetStringUTF16(IDS_CONTENT_CONTEXT_OPENLINKWITH),
       &protocol_handler_submenu_model_);
 }
 
 // Menu delegate functions -----------------------------------------------------
 
 bool RenderViewContextMenu::IsCommandIdEnabled(int id) const {
-  if (RenderViewContextMenuBase::IsCommandIdEnabled(id))
-    return true;
+  {
+    bool enabled = false;
+    if (RenderViewContextMenuBase::IsCommandIdKnown(id, &enabled))
+      return enabled;
+  }
 
   CoreTabHelper* core_tab_helper =
       CoreTabHelper::FromWebContents(source_web_contents_);
   int content_restrictions = 0;
   if (core_tab_helper)
     content_restrictions = core_tab_helper->content_restrictions();
   if (id == IDC_PRINT && (content_restrictions & CONTENT_RESTRICTION_PRINT))
     return false;
 
   if (id == IDC_SAVE_PAGE &&
@@ skipping 816 matching lines @@
   source_web_contents_->GetRenderViewHost()->
       ExecuteMediaPlayerActionAtLocation(location, action);
 }
 
 void RenderViewContextMenu::PluginActionAt(
     const gfx::Point& location,
     const WebPluginAction& action) {
   source_web_contents_->GetRenderViewHost()->
       ExecutePluginActionAtLocation(location, action);
 }