[Sync] Simplify GetSessionName interface

chrome/browser/sync/util/get_session_name_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 "chrome/browser/sync/util/get_session_name_task.h"
+#include "chrome/browser/sync/util/get_session_name.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace browser_sync {
 
 typedef testing::Test SyncGetSessionNameTaskTest;
 
 #if defined(OS_WIN)
 // The test is somewhat silly, and just verifies that we return a computer name.
 TEST_F(SyncGetSessionNameTaskTest, GetComputerName) {
-  std::string computer_name = GetSessionNameTask::GetComputerName();
+  std::string computer_name = internal::GetComputerName();
   EXPECT_TRUE(!computer_name.empty());
 }
 #endif
 
 #if defined(OS_MACOSX)
 // The test is somewhat silly, and just verifies that we return a hardware
 // model name.
 TEST_F(SyncGetSessionNameTaskTest, GetHardwareModelName) {
-  std::string hardware_model = GetSessionNameTask::GetHardwareModelName();
+  std::string hardware_model = internal::GetHardwareModelName();
   EXPECT_TRUE(!hardware_model.empty());
 }
 #endif
 
 }