Move PathExists to base namespace.

chrome/browser/chromeos/policy/user_cloud_policy_store_chromeos_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 "chrome/browser/chromeos/policy/user_cloud_policy_store_chromeos.h"
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
@@ skipping 484 matching lines @@
   // Verify the legacy cache has been loaded.
   em::PolicyData expected_policy_data;
   EXPECT_TRUE(expected_policy_data.ParseFromString(
                   cached_policy.cloud_policy().policy_data()));
   expected_policy_data.clear_public_key_version();
   ASSERT_TRUE(store_->policy());
   EXPECT_EQ(expected_policy_data.SerializeAsString(),
             store_->policy()->SerializeAsString());
   VerifyPolicyMap(kDefaultHomepage);
   EXPECT_EQ(CloudPolicyStore::STATUS_OK, store_->status());
-  EXPECT_TRUE(file_util::PathExists(policy_file()));
+  EXPECT_TRUE(base::PathExists(policy_file()));
 
   // Now store a new policy using the new homepage location.
   const char kNewHomepage[] = "http://google.com";
   policy_.payload().mutable_homepagelocation()->set_value(kNewHomepage);
   policy_.set_new_signing_key(PolicyBuilder::CreateTestNewSigningKey());
   policy_.Build();
   std::vector<uint8> new_public_key;
   ASSERT_TRUE(policy_.new_signing_key()->ExportPublicKey(&new_public_key));
   ASSERT_NO_FATAL_FAILURE(
       PerformStorePolicy(&new_public_key, kDefaultHomepage, kNewHomepage));
   VerifyPolicyMap(kNewHomepage);
 
   // Verify that the legacy cache has been removed.
-  EXPECT_FALSE(file_util::PathExists(policy_file()));
+  EXPECT_FALSE(base::PathExists(policy_file()));
 }
 
 }  // namespace
 
 }  // namespace policy