Move PathExists to base namespace.

sql/connection_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/files/scoped_temp_dir.h"
 #include "base/logging.h"
 #include "sql/connection.h"
 #include "sql/meta_table.h"
 #include "sql/statement.h"
@@ skipping 401 matching lines @@
 }
 #endif
 
 TEST_F(SQLConnectionTest, Delete) {
   EXPECT_TRUE(db().Execute("CREATE TABLE x (x)"));
   db().Close();
 
   // Should have both a main database file and a journal file because
   // of journal_mode PERSIST.
   base::FilePath journal(db_path().value() + FILE_PATH_LITERAL("-journal"));
-  ASSERT_TRUE(file_util::PathExists(db_path()));
-  ASSERT_TRUE(file_util::PathExists(journal));
+  ASSERT_TRUE(base::PathExists(db_path()));
+  ASSERT_TRUE(base::PathExists(journal));
 
   sql::Connection::Delete(db_path());
-  EXPECT_FALSE(file_util::PathExists(db_path()));
-  EXPECT_FALSE(file_util::PathExists(journal));
+  EXPECT_FALSE(base::PathExists(db_path()));
+  EXPECT_FALSE(base::PathExists(journal));
 }