Clean up transform methods in GraphicsContext.

Source/core/rendering/RenderWidget.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2006, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 151 matching lines @@
     // to paint itself. That way it will composite properly with z-indexed layers.
     IntPoint widgetLocation = widget->frameRect().location();
     IntPoint paintLocation(roundToInt(adjustedPaintOffset.x() + borderLeft() + paddingLeft()),
         roundToInt(adjustedPaintOffset.y() + borderTop() + paddingTop()));
     IntRect paintRect = paintInfo.rect;
 
     IntSize widgetPaintOffset = paintLocation - widgetLocation;
     // When painting widgets into compositing layers, tx and ty are relative to the enclosing compositing layer,
     // not the root. In this case, shift the CTM and adjust the paintRect to be root-relative to fix plug-in drawing.
     if (!widgetPaintOffset.isZero()) {
-        paintInfo.context->translate(widgetPaintOffset);
+        paintInfo.context->translate(widgetPaintOffset.width(), widgetPaintOffset.height());
         paintRect.move(-widgetPaintOffset);
     }
     widget->paint(paintInfo.context, paintRect);
 
     if (!widgetPaintOffset.isZero())
-        paintInfo.context->translate(-widgetPaintOffset);
+        paintInfo.context->translate(-widgetPaintOffset.width(), -widgetPaintOffset.height());
 
     if (widget->isFrameView()) {
         FrameView* frameView = toFrameView(widget);
         bool runOverlapTests = !frameView->useSlowRepaintsIfNotOverlapped() || frameView->hasCompositedContent();
         if (paintInfo.overlapTestRequests && runOverlapTests) {
             ASSERT(!paintInfo.overlapTestRequests->contains(this));
             paintInfo.overlapTestRequests->set(this, widget->frameRect());
         }
     }
 }
@@ skipping 126 matching lines @@
 CursorDirective RenderWidget::getCursor(const LayoutPoint& point, Cursor& cursor) const
 {
     if (widget() && widget()->isPluginView()) {
         // A plug-in is responsible for setting the cursor when the pointer is over it.
         return DoNotSetCursor;
     }
     return RenderReplaced::getCursor(point, cursor);
 }
 
 } // namespace WebCore