Make classes and structures in core/events and core/fetch fast-allocated.

Source/core/fetch/FetchInitiatorInfo.h

 /*
  * 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
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  * THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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 #ifndef FetchInitiatorInfo_h
 #define FetchInitiatorInfo_h
 
+#include "wtf/Allocator.h"
 #include "wtf/text/AtomicString.h"
 #include "wtf/text/TextPosition.h"
 
 namespace blink {
 
 struct FetchInitiatorInfo {
+    DISALLOW_ALLOCATION();
     FetchInitiatorInfo()
         : name()
         , position(TextPosition::belowRangePosition())
         , startTime(0.0)
     {
     }
 
     // When adding members, CrossThreadFetchInitiatorInfoData should be
     // updated.
     AtomicString name;
     TextPosition position;
     double startTime;
 };
 
 // Encode AtomicString as String to cross threads.
 struct CrossThreadFetchInitiatorInfoData {
+    DISALLOW_ALLOCATION();
     explicit CrossThreadFetchInitiatorInfoData(const FetchInitiatorInfo& info)
         : name(info.name.string().isolatedCopy())
         , position(info.position)
         , startTime(info.startTime)
     {
     }
 
     operator FetchInitiatorInfo() const
     {
         FetchInitiatorInfo info;
         info.name = AtomicString(name);
         info.position = position;
         info.startTime = startTime;
         return info;
     }
 
     String name;
     TextPosition position;
     double startTime;
 };
 
 } // namespace blink
 
 #endif