Move PathExists to base namespace.

chrome/test/perf/startup_test.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/environment.h"
 #include "base/file_util.h"
 #include "base/files/file_enumerator.h"
 #include "base/path_service.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
@@ skipping 42 matching lines @@
     NOT_IMPORTANT,
     IMPORTANT
   };
 
   // Load a file on startup rather than about:blank.  This tests a longer
   // startup path, including resource loading.
   void SetUpWithFileURL() {
     const base::FilePath file_url = ui_test_utils::GetTestFilePath(
         base::FilePath(base::FilePath::kCurrentDirectory),
         base::FilePath(FILE_PATH_LITERAL("simple.html")));
-    ASSERT_TRUE(file_util::PathExists(file_url));
+    ASSERT_TRUE(base::PathExists(file_url));
     launch_arguments_.AppendArgPath(file_url);
   }
 
   // Setup the command line arguments to capture profiling data for tasks.
   void SetUpWithProfiling() {
     profiling_file_ = ui_test_utils::GetTestFilePath(
         base::FilePath(base::FilePath::kCurrentDirectory),
         base::FilePath(FILE_PATH_LITERAL("task_profile.json")));
     launch_arguments_.AppendSwitchPath(switches::kProfilingOutputFile,
                                        profiling_file_);
@@ skipping 398 matching lines @@
 }
 
 TEST_F(StartupTest, ProfilingScript1) {
   SetUpWithFileURL();
   SetUpWithProfiling();
   RunStartupTest("warm", "profiling_scripts1", WARM, NOT_IMPORTANT,
                  PerfUITestSuite::DEFAULT_THEME, 1, 0);
 }
 
 }  // namespace