Remove WebScroll*

sky/engine/testing/platform/platform_impl.cc

Index: sky/engine/testing/platform/platform_impl.cc
diff --git a/sky/engine/testing/platform/platform_impl.cc b/sky/engine/testing/platform/platform_impl.cc
index d47f74c016e070ed6b083462cbb01f505923f200..901c8e858580c6ccd47477ceaedff68c37c6dcf1 100644
--- a/sky/engine/testing/platform/platform_impl.cc
+++ b/sky/engine/testing/platform/platform_impl.cc
@@ -90,10 +90,6 @@ blink::WebUnitTestSupport* PlatformImpl::unitTestSupport() {
   return &unit_test_support_;
 }
 
-blink::WebScrollbarBehavior* PlatformImpl::scrollbarBehavior() {
-  return &scrollbar_behavior_;
-}
-
 const unsigned char* PlatformImpl::getTraceCategoryEnabledFlag(
     const char* category_name) {
   static const unsigned char buf[] = "*";