Introduce WebTaskRunner Patch 3/5

Source/platform/scroll/ScrollableAreaTest.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 "platform/scroll/ScrollableArea.h"
 
 #include "platform/TestingPlatformSupport.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebScheduler.h"
@@ skipping 46 matching lines @@
 
     IntPoint m_scrollPosition;
     IntPoint m_maximumScrollPosition;
 };
 
 class FakeWebThread : public WebThread {
 public:
     FakeWebThread() { }
     ~FakeWebThread() override { }
 
-    void postTask(const WebTraceLocation&, Task*) override
+    WebTaskRunner* taskRunner() override
     {
         ASSERT_NOT_REACHED();
-    }
-
-    void postDelayedTask(const WebTraceLocation&, Task*, long long) override
-    {
-        ASSERT_NOT_REACHED();
+        return nullptr;
     }
 
     bool isCurrentThread() const override
     {
         ASSERT_NOT_REACHED();
         return true;
     }
 
     WebScheduler* scheduler() const override
     {
@@ skipping 38 matching lines @@
 };
 
 TEST_F(ScrollableAreaTest, ScrollAnimatorCurrentPositionShouldBeSync)
 {
     OwnPtrWillBeRawPtr<MockScrollableArea> scrollableArea = MockScrollableArea::create(IntPoint(0, 100));
     scrollableArea->setScrollPosition(IntPoint(0, 10000), CompositorScroll);
     EXPECT_EQ(100.0, scrollableArea->scrollAnimator()->currentPosition().y());
 }
 
 } // namespace blink