Turning on clip anti-aliasing by default in Chrome.

third_party/WebKit/Source/modules/canvas2d/CanvasRenderingContext2D.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008 Dirk Schulze <krit@webkit.org>
  * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
  * Copyright (C) 2012, 2013 Intel Corporation. All rights reserved.
  * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
  *
@@ skipping 101 matching lines @@
 CanvasRenderingContext2D::CanvasRenderingContext2D(HTMLCanvasElement* canvas, const CanvasContextCreationAttributes& attrs, Document& document)
     : CanvasRenderingContext(canvas, nullptr, attrs)
     , m_contextLostMode(NotLostContext)
     , m_contextRestorable(true)
     , m_tryRestoreContextAttemptCount(0)
     , m_dispatchContextLostEventTimer(this, &CanvasRenderingContext2D::dispatchContextLostEvent)
     , m_dispatchContextRestoredEventTimer(this, &CanvasRenderingContext2D::dispatchContextRestoredEvent)
     , m_tryRestoreContextEventTimer(this, &CanvasRenderingContext2D::tryRestoreContextEvent)
     , m_pruneLocalFontCacheScheduled(false)
 {
-    if (document.settings() && document.settings()->antialiasedClips2dCanvasEnabled())
+    if (document.settings() && !document.settings()->antialiasedClips2dCanvasDisabled())
         m_clipAntialiasing = AntiAliased;
     setShouldAntialias(true);
     ThreadState::current()->registerPreFinalizer(this);
 }
 
 void CanvasRenderingContext2D::setCanvasGetContextResult(RenderingContext& result)
 {
     result.setCanvasRenderingContext2D(this);
 }
 
@@ skipping 948 matching lines @@
     return true;
 }
 
 void CanvasRenderingContext2D::resetUsageTracking()
 {
     UsageCounters newCounters;
     m_usageCounters = newCounters;
 }
 
 } // namespace blink