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

Source/core/fetch/FetchRequest.h

 /*
  * Copyright (C) 2012 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 14 matching lines @@
 
 #ifndef FetchRequest_h
 #define FetchRequest_h
 
 #include "core/CoreExport.h"
 #include "core/fetch/ClientHintsPreferences.h"
 #include "core/fetch/FetchInitiatorInfo.h"
 #include "core/fetch/ResourceLoaderOptions.h"
 #include "platform/network/ResourceLoadPriority.h"
 #include "platform/network/ResourceRequest.h"
+#include "wtf/Allocator.h"
 #include "wtf/text/AtomicString.h"
 
 namespace blink {
 class SecurityOrigin;
 
 class CORE_EXPORT FetchRequest {
+    STACK_ALLOCATED();
 public:
     enum DeferOption { NoDefer, LazyLoad, DeferredByClient };
     enum OriginRestriction { UseDefaultOriginRestrictionForType, RestrictToSameOrigin, NoOriginRestriction };
 
     struct ResourceWidth {
+        DISALLOW_ALLOCATION();
         float width;
         bool isSet;
 
         ResourceWidth()
             : width(0)
             , isSet(false)
         {
         }
     };
 
@@ skipping 41 matching lines @@
     bool m_forPreload;
     DeferOption m_defer;
     OriginRestriction m_originRestriction;
     ResourceWidth m_resourceWidth;
     ClientHintsPreferences m_clientHintPreferences;
 };
 
 } // namespace blink
 
 #endif