Move ReadFileToString to the base namespace.

components/webdata/common/web_database_migration_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 <string>
 
 #include "base/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/guid.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 202 matching lines @@
   // Returns true if the file exists and is read successfully, false otherwise.
   bool GetWebDatabaseData(const base::FilePath& file, std::string* contents) {
     base::FilePath source_path;
     PathService::Get(base::DIR_SOURCE_ROOT, &source_path);
     source_path = source_path.AppendASCII("components");
     source_path = source_path.AppendASCII("test");
     source_path = source_path.AppendASCII("data");
     source_path = source_path.AppendASCII("web_database");
     source_path = source_path.Append(file);
     return base::PathExists(source_path) &&
-        file_util::ReadFileToString(source_path, contents);
+        base::ReadFileToString(source_path, contents);
   }
 
   static int VersionFromConnection(sql::Connection* connection) {
     // Get version.
     sql::Statement s(connection->GetUniqueStatement(
         "SELECT value FROM meta WHERE key='version'"));
     if (!s.Step())
       return 0;
     return s.ColumnInt(0);
   }
@@ skipping 1876 matching lines @@
     ASSERT_TRUE(connection.Open(GetDatabasePath()));
     ASSERT_TRUE(sql::MetaTable::DoesTableExist(&connection));
 
     // Check version.
     EXPECT_EQ(kCurrentTestedVersionNumber, VersionFromConnection(&connection));
 
     // New columns should have been created.
     EXPECT_TRUE(connection.DoesColumnExist("keywords", "new_tab_url"));
   }
 }