cc: Remove 'using' namespace directive of WTF from thread_task_unittest.cc

cc/thread_task_unittest.cc

 // Copyright 2011 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 "config.h"
 
 #include "cc/thread_task.h"
 
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-using namespace cc;
-using namespace WTF;
-
-namespace {
+namespace cc {
 
 class Mock {
 public:
     MOCK_METHOD0(method0, void());
     MOCK_METHOD1(method1, void(int a1));
     MOCK_METHOD2(method2, void(int a1, int a2));
     MOCK_METHOD3(method3, void(int a1, int a2, int a3));
     MOCK_METHOD4(method4, void(int a1, int a2, int a3, int a4));
     MOCK_METHOD5(method5, void(int a1, int a2, int a3, int a4, int a5));
 };
 
 TEST(ThreadTaskTest, runnableMethods)
 {
     Mock mock;
     EXPECT_CALL(mock, method0()).Times(1);
     EXPECT_CALL(mock, method1(9)).Times(1);
     EXPECT_CALL(mock, method2(9, 8)).Times(1);
     EXPECT_CALL(mock, method3(9, 8, 7)).Times(1);
     EXPECT_CALL(mock, method4(9, 8, 7, 6)).Times(1);
     EXPECT_CALL(mock, method5(9, 8, 7, 6, 5)).Times(1);
 
     createThreadTask(&mock, &Mock::method0)->performTask();
     createThreadTask(&mock, &Mock::method1, 9)->performTask();
     createThreadTask(&mock, &Mock::method2, 9, 8)->performTask();
     createThreadTask(&mock, &Mock::method3, 9, 8, 7)->performTask();
     createThreadTask(&mock, &Mock::method4, 9, 8, 7, 6)->performTask();
     createThreadTask(&mock, &Mock::method5, 9, 8, 7, 6, 5)->performTask();
 }
 
-} // namespace
+}  // namespace cc