Move PathExists to base namespace.

chrome/browser/extensions/user_script_listener_unittest.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 "base/file_util.h"
 #include "base/json/json_file_value_serializer.h"
 #include "base/message_loop.h"
 #include "base/threading/thread.h"
 #include "chrome/browser/extensions/extension_service_unittest.h"
 #include "chrome/browser/extensions/unpacked_installer.h"
@@ skipping 61 matching lines @@
                                test_headers(),
                                kTestData,
                                true) {}
  private:
   virtual ~SimpleTestJob() {}
 };
 
 // Yoinked from extension_manifest_unittest.cc.
 DictionaryValue* LoadManifestFile(const base::FilePath path,
                                   std::string* error) {
-  EXPECT_TRUE(file_util::PathExists(path));
+  EXPECT_TRUE(base::PathExists(path));
   JSONFileValueSerializer serializer(path);
   return static_cast<DictionaryValue*>(serializer.Deserialize(NULL, error));
 }
 
 scoped_refptr<Extension> LoadExtension(const std::string& filename,
                                        std::string* error) {
   base::FilePath path;
   PathService::Get(chrome::DIR_TEST_DATA, &path);
   path = path.
       AppendASCII("extensions").
@@ skipping 249 matching lines @@
   base::MessageLoop::current()->RunUntilIdle();
 
   bool defer = false;
   throttle->WillStartRequest(&defer);
   ASSERT_FALSE(defer);
 }
 
 }  // namespace
 
 }  // namespace extensions