Update the ICU's default timezone in render

content/common/view_messages.h

 // 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.
 
 // IPC messages for page rendering.
 // Multiply-included message file, hence no include guard.
 
 #include "base/memory/shared_memory.h"
 #include "base/process/process.h"
 #include "base/strings/string16.h"
@@ skipping 605 matching lines @@
 IPC_MESSAGE_ROUTED0(ViewMsg_CreatingNew_ACK)
 
 // Sends updated preferences to the renderer.
 IPC_MESSAGE_ROUTED1(ViewMsg_SetRendererPrefs,
                     content::RendererPreferences)
 
 // This passes a set of webkit preferences down to the renderer.
 IPC_MESSAGE_ROUTED1(ViewMsg_UpdateWebPreferences,
                     content::WebPreferences)
 
-// Informs the renderer that the timezone has changed.
-IPC_MESSAGE_CONTROL0(ViewMsg_TimezoneChange)
+// Informs the renderer that the timezone has changed along with a new
+// timezone ID.
+IPC_MESSAGE_CONTROL1(ViewMsg_TimezoneChange, std::string)
 
 // Tells the render view to close.
 // Expects a Close_ACK message when finished.
 IPC_MESSAGE_ROUTED0(ViewMsg_Close)
 
 // Tells the render view to change its size.  A ViewHostMsg_UpdateRect message
 // is generated in response provided new_size is not empty and not equal to
 // the view's current size.  The generated ViewHostMsg_UpdateRect message will
 // have the IS_RESIZE_ACK flag set. It also receives the resizer rect so that
 // we don't have to fetch it every time WebKit asks for it.
@@ skipping 1036 matching lines @@
 // cached by the OS. Please see RenderMessageFilter::OnPreCacheFontCharacters
 // for details.
 IPC_SYNC_MESSAGE_CONTROL2_0(ViewHostMsg_PreCacheFontCharacters,
                             LOGFONT /* font_data */,
                             base::string16 /* characters */)
 #endif
 
 // Adding a new message? Stick to the sort order above: first platform
 // independent ViewMsg, then ifdefs for platform specific ViewMsg, then platform
 // independent ViewHostMsg, then ifdefs for platform specific ViewHostMsg.