Improve CancellableTaskFactory handling and Oilpan usage.

Source/core/dom/ScriptRunnerTest.cpp

 // Copyright 2015 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 "core/dom/ScriptRunner.h"
 
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
 #include "core/dom/ScriptLoader.h"
+#include "platform/scheduler/CancellableTaskFactory.h"
 #include "public/platform/Platform.h"
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
 
 using ::testing::Invoke;
 using ::testing::ElementsAre;
 using ::testing::Return;
 
 namespace blink {
 
@@ skipping 550 matching lines @@
     testing::Mock::VerifyAndClear(scriptLoader2.get());
     testing::Mock::VerifyAndClear(scriptLoader3.get());
     EXPECT_CALL(*scriptLoader2, execute()).Times(1);
     EXPECT_CALL(*scriptLoader3, execute()).Times(1);
     EXPECT_CALL(*scriptLoader2, isReady()).WillRepeatedly(Return(true));
     EXPECT_CALL(*scriptLoader3, isReady()).WillRepeatedly(Return(true));
     m_platform.runAllTasks();
 }
 
 } // namespace blink