content: change the CSSInsertRequest message to string16

content/common/view_messages.h

 // Copyright (c) 2011 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/process.h"
 #include "base/shared_memory.h"
 #include "content/common/common_param_traits.h"
@@ skipping 941 matching lines @@
 IPC_MESSAGE_ROUTED4(ViewMsg_ScriptEvalRequest,
                     string16,  /* frame_xpath */
                     string16,  /* jscript_url */
                     int,  /* ID */
                     bool  /* If true, result is sent back. */)
 
 // Request for the renderer to evaluate an xpath to a frame and insert css
 // into that frame's document. See ViewMsg_ScriptEvalRequest for details on
 // allowed xpath expressions.
 IPC_MESSAGE_ROUTED2(ViewMsg_CSSInsertRequest,
-                    std::wstring,  /* frame_xpath */
+                    string16,  /* frame_xpath */
                     std::string  /* css string */)
 
 // External popup menus.
 IPC_MESSAGE_ROUTED1(ViewMsg_SelectPopupMenuItem,
                     int /* selected index, -1 means no selection */)
 
 // Change the zoom level for the current main frame.  If the level actually
 // changes, a ViewHostMsg_DidZoomURL message will be sent back to the browser
 // telling it what url got zoomed and what its current zoom level is.
 IPC_MESSAGE_ROUTED1(ViewMsg_Zoom,
@@ skipping 1048 matching lines @@
 IPC_MESSAGE_ROUTED3(ViewHostMsg_SendSerializedHtmlData,
                     GURL /* frame's url */,
                     std::string /* data buffer */,
                     int32 /* complete status */)
 
 // Request updated information about the client firewall traversal policy.
 // Will result in a ViewMsg_UpdateRemoteAccessClientFirewallTraversal message
 // being sent back.
 IPC_MESSAGE_ROUTED0(ViewHostMsg_RequestRemoteAccessClientFirewallTraversal)