cc: Enable composited border-radius scrolling.

third_party/WebKit/Source/web/tests/ScrollingCoordinatorTest.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 1114 matching lines @@
   TestNonCompositedReasons("transform",
                            MainThreadScrollingReason::kHasTransformAndLCDText);
 }
 
 TEST_P(NonCompositedMainThreadScrollingReasonTest, BackgroundNotOpaqueTest) {
   TestNonCompositedReasons(
       "background-not-opaque",
       MainThreadScrollingReason::kBackgroundNotOpaqueInRectAndLCDText);
 }
 
-TEST_P(NonCompositedMainThreadScrollingReasonTest, BorderRadiusTest) {
-  TestNonCompositedReasons("border-radius",
-                           MainThreadScrollingReason::kHasBorderRadius);
-}
-
 TEST_P(NonCompositedMainThreadScrollingReasonTest, ClipTest) {
   TestNonCompositedReasons("clip",
                            MainThreadScrollingReason::kHasClipRelatedProperty);
 }
 
 TEST_P(NonCompositedMainThreadScrollingReasonTest, ClipPathTest) {
   uint32_t clip_reason = MainThreadScrollingReason::kHasClipRelatedProperty;
   GetWebView()->GetSettings()->SetPreferCompositingToLCDTextEnabled(false);
   Document* document = GetFrame()->GetDocument();
   // Test ancestor with ClipPath
@@ skipping 35 matching lines @@
 
   // Remove clip path from descendant.
   element->removeAttribute(HTMLNames::styleAttr);
   ForceFullCompositingUpdate();
   EXPECT_FALSE(scrollable_area->GetNonCompositedMainThreadScrollingReasons() &
                clip_reason);
   EXPECT_FALSE(frame_view->GetMainThreadScrollingReasons() & clip_reason);
 }
 
 TEST_P(NonCompositedMainThreadScrollingReasonTest, LCDTextEnabledTest) {
-  TestNonCompositedReasons("transparent border-radius",
-                           MainThreadScrollingReason::kHasOpacityAndLCDText |
-                               MainThreadScrollingReason::kHasBorderRadius);
+  TestNonCompositedReasons("transparent",
+                           MainThreadScrollingReason::kHasOpacityAndLCDText);
 }
 
 TEST_P(NonCompositedMainThreadScrollingReasonTest, BoxShadowTest) {
   TestNonCompositedReasons(
       "box-shadow", MainThreadScrollingReason::kHasBoxShadowFromNonRootLayer);
 }
 
 TEST_P(NonCompositedMainThreadScrollingReasonTest, StackingContextTest) {
   GetWebView()->GetSettings()->SetPreferCompositingToLCDTextEnabled(false);
 
@@ skipping 44 matching lines @@
 
   Element* container2 = document->getElementById("scroller2");
   ASSERT_TRUE(container2);
   container2->setAttribute("class", "composited border-radius",
                            ASSERT_NO_EXCEPTION);
   ForceFullCompositingUpdate();
   PaintLayerScrollableArea* scrollable_area2 =
       ToLayoutBoxModelObject(container2->GetLayoutObject())
           ->GetScrollableArea();
   ASSERT_TRUE(scrollable_area2);
-  EXPECT_TRUE(scrollable_area2->GetNonCompositedMainThreadScrollingReasons() &
-              MainThreadScrollingReason::kHasBorderRadius);
+  EXPECT_TRUE(scrollable_area2->UsesCompositedScrolling());
 }
 
 }  // namespace blink