Make classes and structures in core/loader fast-allocated.

Source/core/loader/DocumentLoader.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2011 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.
@@ skipping 113 matching lines @@
 
     bool isRedirect() const { return m_redirectChain.size() > 1; }
     void clearRedirectChain();
     void appendRedirect(const KURL&);
 
     PassRefPtrWillBeRawPtr<ContentSecurityPolicy> releaseContentSecurityPolicy() { return m_contentSecurityPolicy.release(); }
 
     ClientHintsPreferences& clientHintsPreferences() { return m_clientHintsPreferences; }
 
     struct InitialScrollState {
+        DISALLOW_ALLOCATION();
         InitialScrollState()
             : wasScrolledByUser(false)
             , didRestoreFromHistory(false)
         {
         }
 
         bool wasScrolledByUser;
         bool didRestoreFromHistory;
     };
     InitialScrollState& initialScrollState() { return m_initialScrollState; }
@@ skipping 96 matching lines @@
     // Used to protect against reentrancy into dataReceived().
     bool m_inDataReceived;
     RefPtr<SharedBuffer> m_dataBuffer;
 };
 
 DECLARE_WEAK_IDENTIFIER_MAP(DocumentLoader);
 
 } // namespace blink
 
 #endif // DocumentLoader_h