Implement interfaces in PaintInfo and make it a class.

Source/core/rendering/RenderTextControlSingleLine.cpp

 /**
  * Copyright (C) 2006, 2007, 2010 Apple Inc. All rights reserved.
  *           (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  *
  * 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 48 matching lines @@
 RenderStyle* RenderTextControlSingleLine::textBaseStyle() const
 {
     HTMLElement* innerBlock = innerBlockElement();
     return innerBlock ? innerBlock->renderer()->style() : style();
 }
 
 void RenderTextControlSingleLine::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 {
     RenderTextControl::paint(paintInfo, paintOffset);
 
-    if (paintInfo.phase == PaintPhaseBlockBackground && m_shouldDrawCapsLockIndicator) {
+    if (paintInfo.getPhase() == PaintPhaseBlockBackground && m_shouldDrawCapsLockIndicator) {
         LayoutRect contentsRect = contentBoxRect();
 
         // Center in the block progression direction.
         if (isHorizontalWritingMode())
             contentsRect.setY((height() - contentsRect.height()) / 2);
         else
             contentsRect.setX((width() - contentsRect.width()) / 2);
 
         // Convert the rect into the coords used for painting the content
         contentsRect.moveBy(paintOffset + location());
@@ skipping 379 matching lines @@
         return true;
     return RenderBlock::logicalScroll(direction, granularity, multiplier, stopNode);
 }
 
 HTMLInputElement* RenderTextControlSingleLine::inputElement() const
 {
     return toHTMLInputElement(node());
 }
 
 }