Index: third_party/WebKit/Source/platform/scroll/ScrollbarThemeMacOverlayAPI.mm |
diff --git a/third_party/WebKit/Source/platform/scroll/ScrollbarThemeMacOverlayAPI.mm b/third_party/WebKit/Source/platform/scroll/ScrollbarThemeMacOverlayAPI.mm |
index 80820a9a26fe92cb854e65c98f3adf2d76168d04..0a5e666899de71ff58ee62a7851426356c46ba1f 100644 |
--- a/third_party/WebKit/Source/platform/scroll/ScrollbarThemeMacOverlayAPI.mm |
+++ b/third_party/WebKit/Source/platform/scroll/ScrollbarThemeMacOverlayAPI.mm |
@@ -274,5 +274,11 @@ float ScrollbarThemeMacOverlayAPI::thumbOpacity(const ScrollbarThemeClient& scro |
return [scrollbarPainter knobAlpha]; |
} |
+ScrollbarPart ScrollbarThemeMacOverlayAPI::invalidateOnThumbPositionChange(const ScrollbarThemeClient& scrollbar, float oldPosition, float newPosition) const |
+{ |
+ // ScrollAnimatorMac will invalidate the thumb when appropriate. |
+ return NoPart; |
+} |
+ |
} // namespace blink |