Move ReadFileToString to the base namespace.

net/tools/quic/quic_in_memory_cache.cc

 // Copyright (c) 2012 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/tools/quic/quic_in_memory_cache.h"
 
 #include "base/file_util.h"
 #include "base/files/file_enumerator.h"
 #include "base/stl_util.h"
 
@@ skipping 122 matching lines @@
   while (!file.empty()) {
     // Need to skip files in .svn directories
     if (file.value().find("/.svn/") != std::string::npos) {
       file = file_list.Next();
       continue;
     }
 
     BalsaHeaders request_headers, response_headers;
 
     string file_contents;
-    file_util::ReadFileToString(file, &file_contents);
+    base::ReadFileToString(file, &file_contents);
 
     // Frame HTTP.
     CachingBalsaVisitor caching_visitor;
     BalsaFrame framer;
     framer.set_balsa_headers(&response_headers);
     framer.set_balsa_visitor(&caching_visitor);
     size_t processed = 0;
     while (processed < file_contents.length() &&
            !caching_visitor.done_framing()) {
       processed += framer.ProcessInput(file_contents.c_str() + processed,
@@ skipping 62 matching lines @@
   } else if (StringPieceUtils::StartsWithIgnoreCase(uri, "https://")) {
     uri.remove_prefix(8);
   } else if (StringPieceUtils::StartsWithIgnoreCase(uri, "http://")) {
     uri.remove_prefix(7);
   }
   return host.as_string() + uri.as_string();
 }
 
 }  // namespace tools
 }  // namespace net