Use a direct include of strings headers in chrome_frame/.

chrome_frame/protocol_sink_wrap.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 <htiframe.h>
 #include <mshtml.h>
 
 #include "chrome_frame/protocol_sink_wrap.h"
 
 #include "base/logging.h"
 #include "base/memory/singleton.h"
-#include "base/string_number_conversions.h"
-#include "base/string_util.h"
-#include "base/stringprintf.h"
+#include "base/strings/string_number_conversions.h"
+#include "base/strings/string_util.h"
+#include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/win/scoped_bstr.h"
 #include "chrome_frame/bho.h"
 #include "chrome_frame/bind_context_info.h"
 #include "chrome_frame/exception_barrier.h"
 #include "chrome_frame/function_stub.h"
 #include "chrome_frame/policy_settings.h"
 #include "chrome_frame/utils.h"
 
 // BINDSTATUS_SERVER_MIMETYPEAVAILABLE == 54. Introduced in IE 8, so
@@ skipping 972 matching lines @@
     // Explicit release, otherwise ~CComObjectStackEx will complain about
     // outstanding reference to us, because it runs before ~FakeProtocol
     prot.transaction_.Release();
   }
 }
 
 void TransactionHooks::RevertHooks() {
   vtable_patch::UnpatchInterfaceMethods(CTransaction_PatchInfo);
   vtable_patch::UnpatchInterfaceMethods(CTransaction2_PatchInfo);
 }