Always antialias clips in ClipDisplayItem.

third_party/WebKit/Source/platform/graphics/paint/ClipDisplayItem.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "platform/graphics/paint/ClipDisplayItem.h"
 
 #include "platform/geometry/FloatRoundedRect.h"
 #include "platform/graphics/GraphicsContext.h"
 #include "public/platform/WebDisplayItemList.h"
 #include "third_party/skia/include/core/SkScalar.h"
 
 namespace blink {
 
 void ClipDisplayItem::replay(GraphicsContext& context) const
 {
     context.save();
-    context.clipRect(m_clipRect, NotAntiAliased, SkRegion::kIntersect_Op);
+    context.clipRect(m_clipRect, AntiAliased);
 
     for (const FloatRoundedRect& roundedRect : m_roundedRectClips)
-        context.clipRoundedRect(roundedRect, SkRegion::kIntersect_Op);
+        context.clipRoundedRect(roundedRect);
 }
 
 void ClipDisplayItem::appendToWebDisplayItemList(const IntRect& visualRect, WebDisplayItemList* list) const
 {
     WebVector<SkRRect> webRoundedRects(m_roundedRectClips.size());
     for (size_t i = 0; i < m_roundedRectClips.size(); ++i) {
         FloatRoundedRect::Radii rectRadii = m_roundedRectClips[i].radii();
         SkVector skRadii[4];
         skRadii[SkRRect::kUpperLeft_Corner].set(SkIntToScalar(rectRadii.topLeft().width()),
             SkIntToScalar(rectRadii.topLeft().height()));
@@ skipping 23 matching lines @@
 #ifndef NDEBUG
 void ClipDisplayItem::dumpPropertiesAsDebugString(WTF::StringBuilder& stringBuilder) const
 {
     DisplayItem::dumpPropertiesAsDebugString(stringBuilder);
     stringBuilder.append(WTF::String::format(", clipRect: [%d,%d,%d,%d]",
         m_clipRect.x(), m_clipRect.y(), m_clipRect.width(), m_clipRect.height()));
 }
 #endif
 
 } // namespace blink