Blink-side contiguous allocation of display items.

Source/core/layout/LayoutBox.h

Index: Source/core/layout/LayoutBox.h
diff --git a/Source/core/layout/LayoutBox.h b/Source/core/layout/LayoutBox.h
index f4bb2a5fde3fb063cb41d0150ea8bc0deb450536..ba526889900b194ee5b5843ac8808826e8e70299 100644
--- a/Source/core/layout/LayoutBox.h
+++ b/Source/core/layout/LayoutBox.h
@@ -580,7 +580,7 @@ public:
 
     virtual LayoutRect localCaretRect(InlineBox*, int caretOffset, LayoutUnit* extraWidthToEndOfLine = nullptr) override;
 
-    virtual LayoutRect overflowClipRect(const LayoutPoint& location, OverlayScrollbarSizeRelevancy = IgnoreOverlayScrollbarSize);
+    virtual LayoutRect overflowClipRect(const LayoutPoint& location, OverlayScrollbarSizeRelevancy = IgnoreOverlayScrollbarSize) const;

[jbroman, 2015/06/29 18:11:56]

These constness changes don't look like they need to be in this CL; can they be
landed separately?

[pdr., 2015/06/29 22:20:03]

Pulled out into https://codereview.chromium.org/1212293003 (rebase forthcoming).

     LayoutRect clipRect(const LayoutPoint& location);
     virtual bool hasControlClip() const { return false; }
     virtual LayoutRect controlClipRect(const LayoutPoint&) const { return LayoutRect(); }