Oilpan: Move ChromeClient classes into Oilpan heap.

Source/core/page/Page.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * 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 58 matching lines @@
 float deviceScaleFactor(LocalFrame*);
 
 class CORE_EXPORT Page final : public NoBaseWillBeGarbageCollectedFinalized<Page>, public WillBeHeapSupplementable<Page>, public PageLifecycleNotifier, public SettingsDelegate {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(Page);
     WTF_MAKE_NONCOPYABLE(Page);
     friend class Settings;
 public:
     static void platformColorsChanged();
 
     // It is up to the platform to ensure that non-null clients are provided where required.
-    struct CORE_EXPORT PageClients {
-        WTF_MAKE_NONCOPYABLE(PageClients); WTF_MAKE_FAST_ALLOCATED(PageClients);
+    struct CORE_EXPORT PageClients final {
+        STACK_ALLOCATED();
+        WTF_MAKE_NONCOPYABLE(PageClients);
     public:
         PageClients();
         ~PageClients();
 
-        ChromeClient* chromeClient;
+        RawPtrWillBeMember<ChromeClient> chromeClient;
         ContextMenuClient* contextMenuClient;
         EditorClient* editorClient;
         DragClient* dragClient;
         SpellCheckerClient* spellCheckerClient;
     };
 
     explicit Page(PageClients&);
     ~Page() override;
 
     void makeOrdinary();
@@ skipping 171 matching lines @@
     // A pointer to all the interfaces provided to in-process Frames for this Page.
     // FIXME: Most of the members of Page should move onto FrameHost.
     OwnPtrWillBeMember<FrameHost> m_frameHost;
 };
 
 extern template class CORE_EXTERN_TEMPLATE_EXPORT WillBeHeapSupplement<Page>;
 
 } // namespace blink
 
 #endif // Page_h