Enable warning 4389 as an error on windows builds. This will make...

chrome_frame/chrome_active_document.cc

 // Copyright (c) 2010 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.
 
 // Implementation of ChromeActiveDocument
 #include "chrome_frame/chrome_active_document.h"
 
 #include <hlink.h>
 #include <htiface.h>
 #include <initguid.h>
@@ skipping 855 matching lines @@
 
   // Call base class (adds 'About' item)
   return BaseActiveX::PreProcessContextMenu(menu);
 }
 
 bool ChromeActiveDocument::HandleContextMenuCommand(UINT cmd,
     const IPC::ContextMenuParams& params) {
   ScopedComPtr<IWebBrowser2> web_browser2;
   DoQueryService(SID_SWebBrowserApp, m_spClientSite, web_browser2.Receive());
 
-  if (cmd == context_menu_IDC_BACK) {
+  if (cmd == static_cast<UINT>(context_menu_IDC_BACK)) {
     web_browser2->GoBack();
-  } else if (cmd == context_menu_IDC_FORWARD) {
+  } else if (cmd == static_cast<UINT>(context_menu_IDC_FORWARD)) {
     web_browser2->GoForward();
-  } else if (cmd == context_menu_IDC_RELOAD) {
+  } else if (cmd == static_cast<UINT>(context_menu_IDC_RELOAD)) {
     web_browser2->Refresh();
   } else {
     return BaseActiveX::HandleContextMenuCommand(cmd, params);
   }
 
   return true;
 }
 
 HRESULT ChromeActiveDocument::IEExec(const GUID* cmd_group_guid,
                                      DWORD command_id, DWORD cmd_exec_opt,
@@ skipping 355 matching lines @@
   ScopedComPtr<ITridentService2> trident_services;
   trident_services.QueryFrom(shell_browser);
   if (trident_services) {
     trident_services->FirePrivacyImpactedStateChange(wparam);
   } else {
     NOTREACHED() << "Failed to retrieve IWebBrowser2 interface.";
   }
   return 0;
 }