Clean up transform methods in GraphicsContext.

Source/core/rendering/compositing/CompositedLayerMapping.cpp

Index: Source/core/rendering/compositing/CompositedLayerMapping.cpp
diff --git a/Source/core/rendering/compositing/CompositedLayerMapping.cpp b/Source/core/rendering/compositing/CompositedLayerMapping.cpp
index 828d0c2865ac324b37e1df9c82870a8e0e0e5b65..ef76b87292d7db37ecf73429ed3890533c4cf00c 100644
--- a/Source/core/rendering/compositing/CompositedLayerMapping.cpp
+++ b/Source/core/rendering/compositing/CompositedLayerMapping.cpp
@@ -1996,7 +1996,7 @@ void CompositedLayerMapping::doPaintTask(GraphicsLayerPaintInfo& paintInfo, Grap
     // painting code.
 
     IntSize offset = paintInfo.offsetFromRenderer;
-    context->translate(-offset);
+    context->translate(-offset.width(), -offset.height());
 
     // The dirtyRect is in the coords of the painting root.
     IntRect dirtyRect(clip);
@@ -2040,7 +2040,7 @@ void CompositedLayerMapping::doPaintTask(GraphicsLayerPaintInfo& paintInfo, Grap
     ASSERT(!paintInfo.renderLayer->usedTransparency());
 
     // Manually restore the context to its original state by applying the opposite translation.
-    context->translate(offset);
+    context->translate(offset.width(), offset.height());
 }
 
 static void paintScrollbar(Scrollbar* scrollbar, GraphicsContext& context, const IntRect& clip)