Implement interfaces in PaintInfo and make it a class.

Source/core/rendering/EllipsisBox.cpp

 /**
  * Copyright (C) 2003, 2006 Apple Computer, Inc.
  *
  * 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.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 17 matching lines @@
 #include "core/rendering/InlineTextBox.h"
 #include "core/rendering/PaintInfo.h"
 #include "core/rendering/RenderBlock.h"
 #include "core/rendering/RootInlineBox.h"
 #include "core/rendering/style/ShadowData.h"
 
 namespace WebCore {
 
 void EllipsisBox::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset, LayoutUnit lineTop, LayoutUnit lineBottom)
 {
-    GraphicsContext* context = paintInfo.context;
+    GraphicsContext* context = paintInfo.getContext();
     RenderStyle* style = m_renderer->style(isFirstLineStyle());
     Color styleTextColor = m_renderer->resolveColor(style, CSSPropertyWebkitTextFillColor);
     if (styleTextColor != context->fillColor())
         context->setFillColor(styleTextColor);
 
     Color textColor = styleTextColor;
     const Font& font = style->font();
     if (selectionState() != RenderObject::SelectionNone) {
         paintSelection(context, paintOffset, style, font);
 
@@ skipping 120 matching lines @@
     if (visibleToHitTestRequest(request) && boundsRect.intersects(HitTestLocation::rectForPoint(locationInContainer.point(), 0, 0, 0, 0))) {
         renderer()->updateHitTestResult(result, locationInContainer.point() - toLayoutSize(adjustedLocation));
         if (!result.addNodeToRectBasedTestResult(renderer()->node(), request, locationInContainer, boundsRect))
             return true;
     }
 
     return false;
 }
 
 } // namespace WebCore