Draw thin slices of an image w/ anti-aliasing for 2D <canvas>

Source/platform/graphics/GraphicsContext.cpp

 /*
  * Copyright (C) 2003, 2004, 2005, 2006, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 112 matching lines @@
     , m_annotationCount(0)
     , m_layerCount(0)
 #endif
     , m_trackOpaqueRegion(false)
     , m_trackTextRegion(false)
     , m_useHighResMarker(false)
     , m_updatingControlTints(false)
     , m_accelerated(false)
     , m_isCertainlyOpaque(true)
     , m_printing(false)
+    , m_antialiasHairlineImages(false)
 {
     // FIXME: Do some tests to determine how many states are typically used, and allocate
     // several here.
     m_paintStateStack.append(GraphicsContextState::create());
     m_paintState = m_paintStateStack.last().get();
 }
 
 GraphicsContext::~GraphicsContext()
 {
     ASSERT(!m_paintStateIndex);
@@ skipping 1764 matching lines @@
 
 void GraphicsContext::didDrawTextInRect(const SkRect& textRect)
 {
     if (m_trackTextRegion) {
         TRACE_EVENT0("skia", "PlatformContextSkia::trackTextRegion");
         m_textRegion.join(textRect);
     }
 }
 
 }