Create custom scrollbars when html element has overflow:scroll

Source/core/paint/DeprecatedPaintLayerScrollableArea.h

Index: Source/core/paint/DeprecatedPaintLayerScrollableArea.h
diff --git a/Source/core/paint/DeprecatedPaintLayerScrollableArea.h b/Source/core/paint/DeprecatedPaintLayerScrollableArea.h
index 035d19ea20e288eda978515fd4cd133989795910..1d3ba7a0fe75604a659886c650a3faaba5f902ac 100644
--- a/Source/core/paint/DeprecatedPaintLayerScrollableArea.h
+++ b/Source/core/paint/DeprecatedPaintLayerScrollableArea.h
@@ -151,6 +151,8 @@ public:
     void updateAfterStyleChange(const ComputedStyle*);
     void updateAfterOverflowRecalc();
 
+    bool needsScrollbarReconstruction() const;

[skobes, 2015/08/19 16:59:52]

Can this be private?

[MuVen, 2015/08/19 19:20:42]

Done.

+
     bool updateAfterCompositingChange() override;
 
     bool hasScrollbar() const { return m_hBar || m_vBar; }