BR styled clear is ignored while partially relayouting.

Source/core/layout/line/LineLayoutState.h

Index: Source/core/layout/line/LineLayoutState.h
diff --git a/Source/core/layout/line/LineLayoutState.h b/Source/core/layout/line/LineLayoutState.h
index 9ea76fcdea0ee916bea020e31b2c81933c2d3219..ab0ccec9b108a24a52eee52908ab72e99787a76b 100644
--- a/Source/core/layout/line/LineLayoutState.h
+++ b/Source/core/layout/line/LineLayoutState.h
@@ -41,6 +41,7 @@ public:
         , m_endLineMatched(false)
         , m_hasInlineChild(false)
         , m_isFullLayout(fullLayout)
+        , m_containsBRWithClear(false)
         , m_paintInvalidationLogicalTop(paintInvalidationLogicalTop)
         , m_paintInvalidationLogicalBottom(paintInvalidationLogicalBottom)
         , m_adjustedLogicalLineTop(0)
@@ -72,6 +73,9 @@ public:
     bool hasInlineChild() const { return m_hasInlineChild; }
     void setHasInlineChild(bool hasInlineChild) { m_hasInlineChild = hasInlineChild; }
 
+    bool containsBRWithClear() const { return m_containsBRWithClear; }
+    void setContainsBRWithClear(bool containsBRWithClear) { m_containsBRWithClear = containsBRWithClear; }
+
     LineInfo& lineInfo() { return m_lineInfo; }
     const LineInfo& lineInfo() const { return m_lineInfo; }
 
@@ -108,6 +112,8 @@ private:
 
     bool m_isFullLayout;
 
+    bool m_containsBRWithClear;
+
     // FIXME: Should this be a range object instead of two ints?
     LayoutUnit& m_paintInvalidationLogicalTop;
     LayoutUnit& m_paintInvalidationLogicalBottom;