Explicitly set text direction for TextRuns

Source/core/rendering/RenderBR.h

Index: Source/core/rendering/RenderBR.h
diff --git a/Source/core/rendering/RenderBR.h b/Source/core/rendering/RenderBR.h
index 62d1a53479eb012542ec5f70a2186d1317e3fb9b..e14c466309b44c5805df5bed77695b9e612c4b7e 100644
--- a/Source/core/rendering/RenderBR.h
+++ b/Source/core/rendering/RenderBR.h
@@ -40,8 +40,8 @@ public:
 
     virtual LayoutRect selectionRectForRepaint(const RenderLayerModelObject* /*repaintContainer*/, bool /*clipToVisibleContent*/) OVERRIDE { return LayoutRect(); }
 
-    virtual float width(unsigned /*from*/, unsigned /*len*/, const Font&, float /*xPos*/, HashSet<const SimpleFontData*>* = 0 /*fallbackFonts*/ , GlyphOverflow* = 0) const { return 0; }
-    virtual float width(unsigned /*from*/, unsigned /*len*/, float /*xpos*/, bool = false /*firstLine*/, HashSet<const SimpleFontData*>* = 0 /*fallbackFonts*/, GlyphOverflow* = 0) const { return 0; }
+    virtual float width(unsigned /*from*/, unsigned /*len*/, const Font&, float /*xPos*/, TextDirection, HashSet<const SimpleFontData*>* = 0 /*fallbackFonts*/ , GlyphOverflow* = 0) const { return 0; }
+    virtual float width(unsigned /*from*/, unsigned /*len*/, float /*xpos*/, TextDirection, bool = false /*firstLine*/, HashSet<const SimpleFontData*>* = 0 /*fallbackFonts*/, GlyphOverflow* = 0) const { return 0; }
 
     int lineHeight(bool firstLine) const;