Remove ScrollbarTestSuite from platform/scroll

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

Index: third_party/WebKit/Source/platform/scroll/ScrollbarThemeAuraTest.cpp
diff --git a/third_party/WebKit/Source/platform/scroll/ScrollbarThemeAuraTest.cpp b/third_party/WebKit/Source/platform/scroll/ScrollbarThemeAuraTest.cpp
index d4601f19e3ada14f1d83441df7b8e58316289237..b8d58e34a909da3544b76bc94f1676ffc0220712 100644
--- a/third_party/WebKit/Source/platform/scroll/ScrollbarThemeAuraTest.cpp
+++ b/third_party/WebKit/Source/platform/scroll/ScrollbarThemeAuraTest.cpp
@@ -5,6 +5,7 @@
 #include "platform/scroll/ScrollbarThemeAura.h"
 
 #include "platform/scroll/ScrollbarTestSuite.h"
+#include "platform/testing/TestingPlatformSupport.h"
 
 namespace blink {
 
@@ -28,12 +29,11 @@ class ScrollbarThemeAuraButtonOverride final : public ScrollbarThemeAura {
 
 }  // namespace
 
-class ScrollbarThemeAuraTest : public ScrollbarTestSuite {};
+using ScrollbarThemeAuraTest = testing::Test;
 
 TEST_F(ScrollbarThemeAuraTest, ButtonSizeHorizontal) {
-  ScopedTestingPlatformSupport<TestingPlatformSupportWithMockScheduler,
-                               const TestingPlatformSupport::Config&>
-      platform(m_config);
+  ScopedTestingPlatformSupport<TestingPlatformSupportWithMockScheduler>
+      platform;
 
   MockScrollableArea* mockScrollableArea = MockScrollableArea::create();
   ScrollbarThemeMock mockTheme;
@@ -57,9 +57,8 @@ TEST_F(ScrollbarThemeAuraTest, ButtonSizeHorizontal) {
 }
 
 TEST_F(ScrollbarThemeAuraTest, ButtonSizeVertical) {
-  ScopedTestingPlatformSupport<TestingPlatformSupportWithMockScheduler,
-                               const TestingPlatformSupport::Config&>
-      platform(m_config);
+  ScopedTestingPlatformSupport<TestingPlatformSupportWithMockScheduler>
+      platform;
 
   MockScrollableArea* mockScrollableArea = MockScrollableArea::create();
   ScrollbarThemeMock mockTheme;
@@ -83,9 +82,8 @@ TEST_F(ScrollbarThemeAuraTest, ButtonSizeVertical) {
 }
 
 TEST_F(ScrollbarThemeAuraTest, NoButtonsReturnsSize0) {
-  ScopedTestingPlatformSupport<TestingPlatformSupportWithMockScheduler,
-                               const TestingPlatformSupport::Config&>
-      platform(m_config);
+  ScopedTestingPlatformSupport<TestingPlatformSupportWithMockScheduler>
+      platform;
 
   MockScrollableArea* mockScrollableArea = MockScrollableArea::create();
   ScrollbarThemeMock mockTheme;