Move PreFinalizer to WebPluginContainerImpl.

third_party/WebKit/Source/core/exported/WebPluginContainerBase.h

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.#ifndef WebViewBase_h
 
 #ifndef WebPluginContainerBase_h
 #define WebPluginContainerBase_h
 
 #include "core/CoreExport.h"
 #include "core/dom/ContextLifecycleObserver.h"
 #include "core/plugins/PluginView.h"
@@ skipping 14 matching lines @@
 // WebPluginContainerImpl will then take a dependency on WebPluginContainerBase
 // instead, so we can remove cyclic dependencies in web/ and move classes from
 // web/ into core/ or modules.
 // TODO(slangley): Remove this class once WebPluginContainerImpl is in core/.
 class CORE_EXPORT WebPluginContainerBase
     : public GarbageCollectedFinalized<WebPluginContainerBase>,
       public PluginView,
       NON_EXPORTED_BASE(public WebPluginContainer),
       public ContextClient {
   USING_GARBAGE_COLLECTED_MIXIN(WebPluginContainerBase);
-  USING_PRE_FINALIZER(WebPluginContainerBase, DispatchDispose);
 
  public:
   virtual int PrintBegin(const WebPrintParams&) const = 0;
   virtual void PrintPage(int page_number, GraphicsContext&, const IntRect&) = 0;
   virtual void PrintEnd() = 0;
   virtual bool ExecuteEditCommand(const WebString& name) = 0;
   virtual bool ExecuteEditCommand(const WebString& name,
                                   const WebString& value) = 0;
   virtual bool SupportsPaginatedPrint() const = 0;
   virtual bool IsPrintScalingDisabled() const = 0;
   virtual bool GetPrintPresetOptionsFromDocument(
       WebPrintPresetOptions*) const = 0;
   virtual void DidFinishLoading() = 0;
   virtual void DidFailLoading(const ResourceError&) = 0;
   virtual void CalculateGeometry(IntRect& window_rect,
                                  IntRect& clip_rect,
                                  IntRect& unobscured_rect) = 0;
 
   DECLARE_VIRTUAL_TRACE();
-  // USING_PRE_FINALIZER does not allow for virtual dispatch from the finalizer
-  // method. Here we call Dispose() which does the correct virtual dispatch.
-  void DispatchDispose() { Dispose(); }
 
  protected:
   explicit WebPluginContainerBase(LocalFrame*);
 };
 
 DEFINE_TYPE_CASTS(WebPluginContainerBase,
                   PluginView,
                   plugin,
                   plugin->IsPluginContainer(),
                   plugin.IsPluginContainer());
 // Unlike FrameViewBase, we need not worry about object type for container.
 // WebPluginContainerBase is the only subclass of WebPluginContainer.
 DEFINE_TYPE_CASTS(WebPluginContainerBase,
                   WebPluginContainer,
                   container,
                   true,
                   true);
 
 }  // nammespace blink
 
 #endif  // WebPluginContainerBase_h