Index: third_party/WebKit/Source/platform/scroll/ScrollbarTheme.h |
diff --git a/third_party/WebKit/Source/platform/scroll/ScrollbarTheme.h b/third_party/WebKit/Source/platform/scroll/ScrollbarTheme.h |
index 7460d9ebbdf7ffe74b6f887d52a746ba1b9911a2..0005cf9f4552467ad2a1d69459c5ad136dc20f2e 100644 |
--- a/third_party/WebKit/Source/platform/scroll/ScrollbarTheme.h |
+++ b/third_party/WebKit/Source/platform/scroll/ScrollbarTheme.h |
@@ -146,7 +146,7 @@ class PLATFORM_EXPORT ScrollbarTheme { |
virtual IntRect thumbRect(const ScrollbarThemeClient&); |
virtual int thumbThickness(const ScrollbarThemeClient&); |
- virtual int minimumThumbLength(const ScrollbarThemeClient&); |
+ virtual int minimumThumbLength(const ScrollbarThemeClient&) = 0; |
virtual void splitTrack(const ScrollbarThemeClient&, |
const IntRect& track, |