Use a direct include of strings headers in chrome_frame/.

chrome_frame/com_message_event.cc

 // 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.
 
 #include "chrome_frame/com_message_event.h"
 
 #include "base/logging.h"
-#include "base/string_util.h"
-#include "base/stringprintf.h"
+#include "base/strings/string_util.h"
+#include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 
 ComMessageEvent::ComMessageEvent() {
 }
 
 ComMessageEvent::~ComMessageEvent() {
 }
 
 bool ComMessageEvent::Initialize(IOleContainer* container,
                                  const std::string& message,
@@ skipping 132 matching lines @@
   HRESULT hr;
   if (flags & DISPATCH_PROPERTYGET) {
     result->vt = VT_BSTR;
     result->bstrVal = ::SysAllocString(value);
     hr = S_OK;
   } else {
     hr = DISP_E_TYPEMISMATCH;
   }
   return hr;
 }