Move ReadFileToString to the base namespace.

content/shell/app/webkit_test_platform_support_win.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 "content/shell/app/webkit_test_platform_support.h"
 
 #include <windows.h>
 #include <iostream>
 #include <list>
 #include <string>
@@ skipping 17 matching lines @@
 bool SetupFonts() {
   // Load Ahem font.
   // AHEM____.TTF is copied to the directory of DumpRenderTree.exe by
   // WebKit.gyp.
   base::FilePath base_path;
   PathService::Get(base::DIR_MODULE, &base_path);
   base::FilePath font_path =
       base_path.Append(FILE_PATH_LITERAL("/AHEM____.TTF"));
 
   std::string font_buffer;
-  if (!file_util::ReadFileToString(font_path, &font_buffer)) {
+  if (!base::ReadFileToString(font_path, &font_buffer)) {
     std::cerr << "Failed to load font " << WideToUTF8(font_path.value())
               << "\n";
     return false;
   }
 
   DWORD num_fonts = 1;
   HANDLE font_handle =
       ::AddFontMemResourceEx(const_cast<char*>(font_buffer.c_str()),
                              font_buffer.length(),
                              0,
@@ skipping 54 matching lines @@
     std::cerr << *it << "\n";
   }
   return errors.empty();
 }
 
 bool WebKitTestPlatformInitialize() {
   return SetupFonts();
 }
 
 }  // namespace content