Cleanup: Use base/files/file_util.h instead of base/file_util.h in apps/ and extensions/

extensions/browser/verified_contents.cc

 // Copyright 2014 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 "extensions/browser/verified_contents.h"
 
 #include "base/base64.h"
-#include "base/file_util.h"
+#include "base/files/file_util.h"
 #include "base/json/json_reader.h"
 #include "base/strings/string_util.h"
 #include "base/values.h"
 #include "components/crx_file/id_util.h"
 #include "crypto/signature_verifier.h"
 #include "extensions/common/extension.h"
 
 using base::DictionaryValue;
 using base::ListValue;
 using base::Value;
@@ skipping 317 matching lines @@
       reinterpret_cast<const uint8*>(payload.data()), payload.size());
 
   if (!signature_verifier.VerifyFinal()) {
     VLOG(1) << "Could not verify signature - VerifyFinal failure";
     return false;
   }
   return true;
 }
 
 }  // namespace extensions