Revert of PaintChunk::id

third_party/WebKit/Source/platform/graphics/paint/DisplayItem.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 DisplayItem_h
 #define DisplayItem_h
 
 #include "platform/PlatformExport.h"
 #include "platform/graphics/ContiguousContainer.h"
 #include "platform/graphics/paint/DisplayItemClient.h"
@@ skipping 197 matching lines @@
         // derivedSize must fit in m_derivedSize.
         // If it doesn't, enlarge m_derivedSize and fix this assert.
         ASSERT_WITH_SECURITY_IMPLICATION(derivedSize < (1 << 8));
         ASSERT_WITH_SECURITY_IMPLICATION(derivedSize >= sizeof(*this));
     }
 
     virtual ~DisplayItem() { }
 
     // Ids are for matching new DisplayItems with existing DisplayItems.
     struct Id {
-        DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
+        STACK_ALLOCATED();
         Id(const DisplayItemClient& client, const Type type)
             : client(client)
             , type(type) { }
 
         const DisplayItemClient& client;
         const Type type;
     };
 
     Id getId() const { return Id(*m_client, m_type); }
 
@@ skipping 150 matching lines @@
     bool isEndAndPairedWith(DisplayItem::Type otherType) const override = 0;
 #endif
 
 private:
     bool isEnd() const final { return true; }
 };
 
 } // namespace blink
 
 #endif // DisplayItem_h