Use a direct include of strings headers in chrome/renderer/.

chrome/renderer/extensions/logging_native_handler.cc

 // Copyright 2013 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/renderer/extensions/logging_native_handler.h"
 
 #include "base/logging.h"
-#include "base/stringprintf.h"
+#include "base/strings/stringprintf.h"
 
 namespace extensions {
 
 LoggingNativeHandler::LoggingNativeHandler(ChromeV8Context* context)
     : ObjectBackedNativeHandler(context) {
   RouteFunction("DCHECK",
       base::Bind(&LoggingNativeHandler::Dcheck, base::Unretained(this)));
   RouteFunction("CHECK",
       base::Bind(&LoggingNativeHandler::Check, base::Unretained(this)));
   RouteFunction("DCHECK_IS_ON",
@@ skipping 72 matching lines @@
     const v8::Handle<v8::String>& v8_string,
     const std::string& dflt) {
   if (v8_string.IsEmpty())
     return dflt;
   std::string ascii_value = *v8::String::AsciiValue(v8_string);
   return ascii_value.empty() ? dflt : ascii_value;
 }
 
 }  // namespace extensions