Remove support for -webkit-line-clamp

Source/core/rendering/RenderDeprecatedFlexibleBox.h

Index: Source/core/rendering/RenderDeprecatedFlexibleBox.h
diff --git a/Source/core/rendering/RenderDeprecatedFlexibleBox.h b/Source/core/rendering/RenderDeprecatedFlexibleBox.h
index ff039dacb2b6e026a827e2301aa3bcef9fff8ba8..714226074c687ce531f05c78cf083ca03580e6ec 100644
--- a/Source/core/rendering/RenderDeprecatedFlexibleBox.h
+++ b/Source/core/rendering/RenderDeprecatedFlexibleBox.h
@@ -38,8 +38,6 @@ public:
 
     virtual const char* renderName() const;
 
-    virtual void styleWillChange(StyleDifference, const RenderStyle* newStyle) OVERRIDE;
-
     virtual void layoutBlock(bool relayoutChildren, LayoutUnit pageHeight = 0);
     void layoutHorizontalBox(bool relayoutChildren);
     void layoutVerticalBox(bool relayoutChildren);
@@ -65,9 +63,6 @@ protected:
 
 private:
     virtual bool supportsPartialLayout() const OVERRIDE { return false; }
-
-    void applyLineClamp(FlexBoxIterator&, bool relayoutChildren);
-    void clearLineClamp();
 };
 
 } // namespace WebCore