Move ReadFileToString to the base namespace.

net/ocsp/nss_ocsp_unittest.cc

 // Copyright (c) 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 "net/ocsp/nss_ocsp.h"
 
 #include <string>
 
 #include "base/file_util.h"
 #include "base/files/file_path.h"
@@ skipping 60 matching lines @@
  public:
   NssHttpTest()
       : context_(false),
         handler_(NULL),
         verify_proc_(new CertVerifyProcNSS),
         verifier_(new MultiThreadedCertVerifier(verify_proc_.get())) {}
   virtual ~NssHttpTest() {}
 
   virtual void SetUp() {
     std::string file_contents;
-    ASSERT_TRUE(file_util::ReadFileToString(
+    ASSERT_TRUE(base::ReadFileToString(
         GetTestCertsDirectory().AppendASCII("aia-intermediate.der"),
         &file_contents));
     ASSERT_FALSE(file_contents.empty());
 
     // Ownership of |handler| is transferred to the URLRequestFilter, but
     // hold onto the original pointer in order to access |request_count()|.
     scoped_ptr<AiaResponseHandler> handler(
         new AiaResponseHandler(kAiaHeaders, file_contents));
     handler_ = handler.get();
 
@@ skipping 62 matching lines @@
 
   error = test_callback.WaitForResult();
 
   EXPECT_EQ(OK, error);
 
   // Ensure that NSS made an AIA request for the missing intermediate.
   EXPECT_LT(0, request_count());
 }
 
 }  // namespace net