Always antialias clips in ClipDisplayItem.

third_party/WebKit/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 1050 matching lines @@
 }
 
 void GraphicsContext::strokeEllipse(const FloatRect& ellipse)
 {
     if (contextDisabled())
         return;
 
     drawOval(ellipse, immutableState()->strokePaint());
 }
 
-void GraphicsContext::clipRoundedRect(const FloatRoundedRect& rrect, SkRegion::Op regionOp)
+void GraphicsContext::clipRoundedRect(const FloatRoundedRect& rrect, SkRegion::Op regionOp, AntiAliasingMode shouldAntialias)
 {
     if (contextDisabled())
         return;
 
     if (!rrect.isRounded()) {
-        clipRect(rrect.rect(), NotAntiAliased, regionOp);
+        clipRect(rrect.rect(), shouldAntialias, regionOp);
         return;
     }
 
-    clipRRect(rrect, AntiAliased, regionOp);
+    clipRRect(rrect, shouldAntialias, regionOp);
 }
 
 void GraphicsContext::clipOut(const Path& pathToClip)
 {
     if (contextDisabled())
         return;
 
     // Use const_cast and temporarily toggle the inverse fill type instead of copying the path.
     SkPath& path = const_cast<SkPath&>(pathToClip.skPath());
     path.toggleInverseFillType();
@@ skipping 268 matching lines @@
     static const SkPMColor colors[] = {
         SkPreMultiplyARGB(0x60, 0xFF, 0x00, 0x00), // More transparent red
         SkPreMultiplyARGB(0x60, 0xC0, 0xC0, 0xC0)  // More transparent gray
     };
 
     return colors[index];
 }
 #endif
 
 } // namespace blink