Fix alignment issue of ContiguousContainer

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

 // 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.
 
 #ifndef ClipDisplayItem_h
 #define ClipDisplayItem_h
 
 #include "SkRegion.h"
 #include "platform/PlatformExport.h"
 #include "platform/geometry/FloatRoundedRect.h"
 #include "platform/geometry/IntRect.h"
 #include "platform/graphics/paint/DisplayItem.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
-class PLATFORM_EXPORT ClipDisplayItem final : public PairedBeginDisplayItem {
+class PLATFORM_EXPORT ClipDisplayItem final : public PairedBeginDisplayItem<ClipDisplayItem> {
 public:
     ClipDisplayItem(const DisplayItemClient& client, Type type, const IntRect& clipRect)
-        : PairedBeginDisplayItem(client, type, sizeof(*this))
+        : PairedBeginDisplayItem(client, type)
         , m_clipRect(clipRect)
     {
         ASSERT(isClipType(type));
     }
 
     ClipDisplayItem(const DisplayItemClient& client, Type type, const IntRect& clipRect, Vector<FloatRoundedRect>& roundedRectClips)
         : ClipDisplayItem(client, type, clipRect)
     {
         m_roundedRectClips.swap(roundedRectClips);
     }
@@ skipping 11 matching lines @@
         return DisplayItem::equals(other)
             && m_clipRect == static_cast<const ClipDisplayItem&>(other).m_clipRect
             && m_roundedRectClips == static_cast<const ClipDisplayItem&>(other).m_roundedRectClips;
     }
 #endif
 
     const IntRect m_clipRect;
     Vector<FloatRoundedRect> m_roundedRectClips;
 };
 
-class PLATFORM_EXPORT EndClipDisplayItem final : public PairedEndDisplayItem {
+class PLATFORM_EXPORT EndClipDisplayItem final : public PairedEndDisplayItem<EndClipDisplayItem> {
 public:
     EndClipDisplayItem(const DisplayItemClient& client, Type type)
-        : PairedEndDisplayItem(client, type, sizeof(*this))
+        : PairedEndDisplayItem(client, type)
     {
         ASSERT(isEndClipType(type));
     }
 
     void replay(GraphicsContext&) const override;
     void appendToWebDisplayItemList(const IntRect&, WebDisplayItemList*) const override;
 
 private:
 #if ENABLE(ASSERT)
     bool isEndAndPairedWith(DisplayItem::Type otherType) const final { return DisplayItem::isClipType(otherType); }
 #endif
 };
 
 } // namespace blink
 
 #endif // ClipDisplayItem_h