Remove Backslash-as-JPY hack

Source/core/rendering/RenderImage.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Allan Sandfeld Jensen (kde@carewolf.com)
  *           (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011-2012. All rights reserved.
  *
@@ skipping 330 matching lines @@
                     centerX = 0;
                 LayoutUnit centerY = (usableHeight - imageSize.height()) / 2;
                 if (centerY < 0)
                     centerY = 0;
                 imageOffset = LayoutSize(leftBorder + leftPad + centerX + borderWidth, topBorder + topPad + centerY + borderWidth);
                 context->drawImage(image.get(), pixelSnappedIntRect(LayoutRect(paintOffset + imageOffset, imageSize)), CompositeSourceOver, shouldRespectImageOrientation());
                 errorPictureDrawn = true;
             }
 
             if (!m_altText.isEmpty()) {
-                String text = document().displayStringModifiedByEncoding(m_altText);
                 const Font& font = style()->font();
                 const FontMetrics& fontMetrics = font.fontMetrics();
                 LayoutUnit ascent = fontMetrics.ascent();
                 LayoutPoint textRectOrigin = paintOffset;
                 textRectOrigin.move(leftBorder + leftPad + (paddingWidth / 2) - borderWidth, topBorder + topPad + (paddingHeight / 2) - borderWidth);
                 LayoutPoint textOrigin(textRectOrigin.x(), textRectOrigin.y() + ascent);
 
                 // Only draw the alt text if it'll fit within the content box,
                 // and only if it fits above the error image.
-                TextRun textRun = RenderBlock::constructTextRun(this, font, text, style());
+                TextRun textRun = RenderBlock::constructTextRun(this, font, m_altText, style());
                 LayoutUnit textWidth = font.width(textRun);
                 TextRunPaintInfo textRunPaintInfo(textRun);
                 textRunPaintInfo.bounds = FloatRect(textRectOrigin, FloatSize(textWidth, fontMetrics.height()));
                 context->setFillColor(resolveColor(CSSPropertyColor));
                 if (errorPictureDrawn) {
                     if (usableWidth >= textWidth && fontMetrics.height() <= imageOffset.height())
                         context->drawText(font, textRunPaintInfo, textOrigin);
                 } else if (usableWidth >= textWidth && usableHeight >= fontMetrics.height())
                     context->drawText(font, textRunPaintInfo, textOrigin);
             }
@@ skipping 232 matching lines @@
         return 0;
 
     ImageResource* cachedImage = m_imageResource->cachedImage();
     if (cachedImage && cachedImage->image() && cachedImage->image()->isSVGImage())
         return toSVGImage(cachedImage->image())->embeddedContentBox();
 
     return 0;
 }
 
 } // namespace WebCore