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

Source/core/page/PrintContext.h

 /*
  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
  * Copyright (C) 2007 Apple Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 22 matching lines @@
 namespace blink {
 
 class Element;
 class LocalFrame;
 class FloatRect;
 class FloatSize;
 class IntRect;
 class Node;
 
 class CORE_EXPORT PrintContext : public NoBaseWillBeGarbageCollectedFinalized<PrintContext> {
+    WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED(PrintContext);
 public:
     explicit PrintContext(LocalFrame*);
     virtual ~PrintContext();
 
     LocalFrame* frame() const { return m_frame; }
 
     // Break up a page into rects without relayout.
     // FIXME: This means that CSS page breaks won't be on page boundary if the size is different than what was passed to begin(). That's probably not always desirable.
     // FIXME: Header and footer height should be applied before layout, not after.
     // FIXME: The printRect argument is only used to determine page aspect ratio, it would be better to pass a FloatSize with page dimensions instead.
@@ skipping 37 matching lines @@
     // Used to prevent misuses of begin() and end() (e.g., call end without begin).
     bool m_isPrinting;
 
     WillBeHeapHashMap<String, RawPtrWillBeMember<Element>> m_linkedDestinations;
     bool m_linkedDestinationsValid;
 };
 
 }
 
 #endif