Move the logic to retrieve the WebPluginContainer to LocalFrame and Node.

third_party/WebKit/Source/core/plugins/PluginView.h

 /*
  * Copyright (C) 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Google Inc. All rights reserved.
  * Copyright (C) 2014 Opera Software ASA. 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 24 matching lines @@
 #include "platform/wtf/text/WTFString.h"
 #include "public/platform/WebFocusType.h"
 #include "v8/include/v8.h"
 
 namespace blink {
 
 class Event;
 class FrameView;
 class ResourceResponse;
 class WebLayer;
+class WebPluginContainerBase;
 
 // TODO(joelhockey): Remove this class.
 // The only implementation of this class is web/WebPluginContainerImpl.
 // It can be used directly.
 class CORE_EXPORT PluginView : public FrameOrPlugin {
  public:
   virtual ~PluginView() {}
 
   bool IsPluginView() const override { return true; }
 
@@ skipping 15 matching lines @@
   virtual bool WantsWheelEvents() { return false; }
   virtual bool SupportsKeyboardFocus() const { return false; }
   virtual bool SupportsInputMethod() const { return false; }
   virtual bool CanProcessDrag() const { return false; }
 
   virtual void DidReceiveResponse(const ResourceResponse&) {}
   virtual void DidReceiveData(const char*, int) {}
 
   virtual void UpdateAllLifecyclePhases() {}
   virtual void InvalidatePaint() {}
+  virtual WebPluginContainerBase* GetWebPluginContainerBase() const {

[haraken, 2017/05/22 04:51:44]

Can we probably make this a pure virtual method?

[slangley, 2017/05/22 23:53:25]

This class has a mix of pure virtual and virtual - my preference is for this to
not be pure virtual and override only where appropriate.

+    return nullptr;
+  }
 };
 
 DEFINE_TYPE_CASTS(PluginView,
                   FrameOrPlugin,
                   frame_or_plugin,
                   frame_or_plugin->IsPluginView(),
                   frame_or_plugin.IsPluginView());
 
 }  // namespace blink
 
 #endif  // PluginView_h