Fix sub-pixel handling of transparency boxes in DPL

Source/core/paint/DeprecatedPaintLayer.h

Index: Source/core/paint/DeprecatedPaintLayer.h
diff --git a/Source/core/paint/DeprecatedPaintLayer.h b/Source/core/paint/DeprecatedPaintLayer.h
index b474e989b44cd8588dedddc980139503cb99bdfe..a82ca8e54b1c2b9a1d2b03b8c2d918b890d01b34 100644
--- a/Source/core/paint/DeprecatedPaintLayer.h
+++ b/Source/core/paint/DeprecatedPaintLayer.h
@@ -515,7 +515,7 @@ public:
         ASSERT(!m_hasSelfPaintingLayerDescendantDirty);
         return m_hasSelfPaintingLayerDescendant;
     }
-    LayoutRect paintingExtent(const DeprecatedPaintLayer* rootLayer, const LayoutRect& paintDirtyRect, const LayoutSize& subPixelAccumulation, GlobalPaintFlags);
+    LayoutRect paintingExtent(const DeprecatedPaintLayer* rootLayer, const LayoutRect& paintDirtyRect, GlobalPaintFlags);
     void appendSingleFragmentIgnoringPagination(DeprecatedPaintLayerFragments&, const DeprecatedPaintLayer* rootLayer, const LayoutRect& dirtyRect, ClipRectsCacheSlot, OverlayScrollbarSizeRelevancy = IgnoreOverlayScrollbarSize, ShouldRespectOverflowClip = RespectOverflowClip, const LayoutPoint* offsetFromRoot = 0, const LayoutSize& subPixelAccumulation = LayoutSize());
     void collectFragments(DeprecatedPaintLayerFragments&, const DeprecatedPaintLayer* rootLayer, const LayoutRect& dirtyRect,
         ClipRectsCacheSlot, OverlayScrollbarSizeRelevancy inOverlayScrollbarSizeRelevancy = IgnoreOverlayScrollbarSize,
@@ -535,7 +535,7 @@ public:
     };
 
     static LayoutRect transparencyClipBox(const DeprecatedPaintLayer*, const DeprecatedPaintLayer* rootLayer, TransparencyClipBoxBehavior transparencyBehavior,
-        TransparencyClipBoxMode transparencyMode, const LayoutSize& subPixelAccumulation, GlobalPaintFlags = GlobalPaintNormalPhase);
+        TransparencyClipBoxMode transparencyMode, GlobalPaintFlags = GlobalPaintNormalPhase);
 
 private:
     // Bounding box in the coordinates of this layer.