Index: third_party/WebKit/Source/platform/scroll/ScrollbarThemeMacNonOverlayAPI.h |
diff --git a/third_party/WebKit/Source/platform/scroll/ScrollbarThemeMacNonOverlayAPI.h b/third_party/WebKit/Source/platform/scroll/ScrollbarThemeMacNonOverlayAPI.h |
index 21c69f43ba0aaccb220dda7ffe0f7611c1cf3e88..42547296591a396fdc0696c26c9dcb6d5dd980c6 100644 |
--- a/third_party/WebKit/Source/platform/scroll/ScrollbarThemeMacNonOverlayAPI.h |
+++ b/third_party/WebKit/Source/platform/scroll/ScrollbarThemeMacNonOverlayAPI.h |
@@ -44,6 +44,7 @@ public: |
ScrollbarButtonsPlacement buttonsPlacement() const override; |
bool paint(const ScrollbarThemeClient*, GraphicsContext*, const CullRect&) override; |
+ bool invalidateOnWindowActiveChange() const override { return true; } |
protected: |
IntRect trackRect(const ScrollbarThemeClient*, bool painting = false) override; |