Move PathExists to base namespace.

ui/gfx/gfx_paths.cc

 // Copyright (c) 2011 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 "ui/gfx/gfx_paths.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/path_service.h"
 
 namespace gfx {
 
 bool PathProvider(int key, base::FilePath* result) {
   base::FilePath cur;
   switch (key) {
     // The following are only valid in the development environment, and
     // will fail if executed from an installed executable (because the
     // generated path won't exist).
     case DIR_TEST_DATA:
       if (!PathService::Get(base::DIR_SOURCE_ROOT, &cur))
         return false;
       cur = cur.Append(FILE_PATH_LITERAL("ui"));
       cur = cur.Append(FILE_PATH_LITERAL("gfx"));
       cur = cur.Append(FILE_PATH_LITERAL("test"));
       cur = cur.Append(FILE_PATH_LITERAL("data"));
-      if (!file_util::PathExists(cur))  // we don't want to create this
+      if (!base::PathExists(cur))  // we don't want to create this
         return false;
       break;
     default:
       return false;
   }
 
   *result = cur;
   return true;
 }
 
 // This cannot be done as a static initializer sadly since Visual Studio will
 // eliminate this object file if there is no direct entry point into it.
 void RegisterPathProvider() {
   PathService::RegisterProvider(PathProvider, PATH_START, PATH_END);
 }
 
 }  // namespace gfx