Use a direct include of strings headers in chrome/browser/extensions/, part 4.

chrome/browser/extensions/media_galleries_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/browser/extensions/media_galleries_handler.h"
 
 #include "base/logging.h"
-#include "base/string_util.h"
 #include "base/strings/string_number_conversions.h"
+#include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "chrome/common/extensions/extension_manifest_constants.h"
 #include "chrome/common/extensions/manifest.h"
 #include "extensions/common/error_utils.h"
 
 namespace keys = extension_manifest_keys;
 namespace errors = extension_manifest_errors;
 
@@ skipping 118 matching lines @@
     return false;  // Failed to parse media galleries actions definition.
   }
 
   extension->SetManifestData(keys::kMediaGalleriesHandlers, info.release());
   return true;
 }
 
 const std::vector<std::string> MediaGalleriesHandlerParser::Keys() const {
   return SingleKey(keys::kMediaGalleriesHandlers);
 }