Abs-positioned objects should move with inline rel-positioned containers when the latter change wid…

Source/core/rendering/line/BreakingContextInlineHeaders.h

Index: Source/core/rendering/line/BreakingContextInlineHeaders.h
diff --git a/Source/core/rendering/line/BreakingContextInlineHeaders.h b/Source/core/rendering/line/BreakingContextInlineHeaders.h
index 4459e50bcaefe4185dfc46ebbe58ba35f8cd096a..1719282e7614edcd03a4d50e25b10072258d9691 100644
--- a/Source/core/rendering/line/BreakingContextInlineHeaders.h
+++ b/Source/core/rendering/line/BreakingContextInlineHeaders.h
@@ -210,6 +210,10 @@ inline void setStaticPositions(RenderBlockFlow* block, RenderBox* child)
         // inline so that we can obtain the value later.
         toRenderInline(containerBlock)->layer()->setStaticInlinePosition(block->startAlignedOffsetForLine(blockHeight, false));
         toRenderInline(containerBlock)->layer()->setStaticBlockPosition(blockHeight);
+
+        // If |child| is a leading or trailing positioned object this is its only opportunity to ensure it moves with an inline
+        // container changing width.
+        child->moveWithEdgeOfInlineContainerIfNecessary(child->isHorizontalWritingMode());

[esprehn, 2014/07/28 19:35:15]

Why not isHorizontal() here?

     }
     block->updateStaticInlinePositionForChild(child, blockHeight);
     child->layer()->setStaticBlockPosition(blockHeight);