Use LayoutRect during addFocusRingRects to avoid loss of precision

Source/core/rendering/RenderObject.h

Index: Source/core/rendering/RenderObject.h
diff --git a/Source/core/rendering/RenderObject.h b/Source/core/rendering/RenderObject.h
index f9485675c11fdb46810c8ec0689d0a86ed53d01c..987bbef268f9b7584976592cc362e1a1fed77096 100644
--- a/Source/core/rendering/RenderObject.h
+++ b/Source/core/rendering/RenderObject.h
@@ -1000,7 +1000,7 @@ public:
 
     bool createsGroup() const { return isTransparent() || hasMask() || hasFilter() || hasBlendMode(); }
 
-    virtual void addFocusRingRects(Vector<IntRect>&, const LayoutPoint& /* additionalOffset */, const RenderLayerModelObject* /* paintContainer */ = 0) const { };
+    virtual void addFocusRingRects(Vector<LayoutRect>&, const LayoutPoint& additionalOffset, const RenderLayerModelObject* paintContainer) const { }
 
     // Compute a list of hit-test rectangles per layer rooted at this renderer.
     virtual void computeLayerHitTestRects(LayerHitTestRects&) const;
@@ -1104,7 +1104,7 @@ protected:
 
     void paintFocusRing(PaintInfo&, const LayoutPoint&, RenderStyle*);
     void paintOutline(PaintInfo&, const LayoutRect&);
-    void addChildFocusRingRects(Vector<IntRect>&, const LayoutPoint& additionalOffset, const RenderLayerModelObject* paintContainer) const;
+    void addChildFocusRingRects(Vector<LayoutRect>&, const LayoutPoint& additionalOffset, const RenderLayerModelObject* paintContainer) const;
 
     virtual LayoutRect viewRect() const;