Remove ScrollbarTestSuite from platform/scroll

third_party/WebKit/Source/platform/scroll/ScrollbarThemeOverlayTest.cpp

 // Copyright 2016 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 "platform/scroll/ScrollbarThemeOverlay.h"
 
 #include "platform/scroll/ScrollbarTestSuite.h"
+#include "platform/testing/TestingPlatformSupport.h"
 
 namespace blink {
 
 using testing::NiceMock;
 using testing::Return;
 
-class ScrollbarThemeOverlayTest : public ScrollbarTestSuite {};
+using ScrollbarThemeOverlayTest = testing::Test;
 
 TEST_F(ScrollbarThemeOverlayTest, PaintInvalidation) {
-  ScopedTestingPlatformSupport<TestingPlatformSupportWithMockScheduler,
-                               const TestingPlatformSupport::Config&>
-      platform(m_config);
+  ScopedTestingPlatformSupport<TestingPlatformSupportWithMockScheduler>
+      platform;
 
   NiceMock<MockScrollableArea>* mockScrollableArea =
       new NiceMock<MockScrollableArea>(ScrollOffset(100, 100));
   ScrollbarThemeOverlay theme(14, 0, ScrollbarThemeOverlay::AllowHitTest);
 
   Scrollbar* verticalScrollbar = Scrollbar::createForTesting(
       mockScrollableArea, VerticalScrollbar, RegularScrollbar, &theme);
   Scrollbar* horizontalScrollbar = Scrollbar::createForTesting(
       mockScrollableArea, HorizontalScrollbar, RegularScrollbar, &theme);
   ON_CALL(*mockScrollableArea, verticalScrollbar())
@@ skipping 92 matching lines @@
   mockScrollableArea->clearNeedsPaintInvalidationForScrollControls();
 
   verticalScrollbar->setEnabled(true);
   EXPECT_FALSE(verticalScrollbar->thumbNeedsRepaint());
   EXPECT_TRUE(mockScrollableArea->verticalScrollbarNeedsPaintInvalidation());
 
   ThreadState::current()->collectAllGarbage();
 }
 
 }  // namespace blink