Clean up vestiges of ScrollView.

Source/platform/Widget.h

 /*
  * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.  All rights reserved.
  * Copyright (C) 2008 Collabora Ltd.  All rights reserved.
  * Copyright (C) 2013 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 22 matching lines @@
 #include "platform/geometry/IntRect.h"
 #include "wtf/Forward.h"
 #include "wtf/RefCounted.h"
 
 namespace blink {
 
 class Event;
 class GraphicsContext;
 class HostWindow;
 
-// The Widget class serves as a base class for three kinds of objects:
-// (1) Scrollable areas (ScrollView)
-// (2) Scrollbars (Scrollbar)
-// (3) Plugins (PluginView)
+// The Widget class serves as a base class for FrameView, Scrollbar, and PluginView.
 //
 // Widgets are connected in a hierarchy, with the restriction that plugins and
-// scrollbars are always leaves of the tree. Only ScrollViews can have children
+// scrollbars are always leaves of the tree. Only FrameView can have children
 // (and therefore the Widget class has no concept of children).
 class PLATFORM_EXPORT Widget : public RefCounted<Widget> {
 public:
     Widget();
     virtual ~Widget();
 
     int x() const { return frameRect().x(); }
     int y() const { return frameRect().y(); }
     int width() const { return frameRect().width(); }
     int height() const { return frameRect().height(); }
@@ skipping 22 matching lines @@
     bool isVisible() const { return m_selfVisible && m_parentVisible; } // Whether or not we are actually visible.
     virtual void setParentVisible(bool visible) { m_parentVisible = visible; }
     void setSelfVisible(bool v) { m_selfVisible = v; }
 
     virtual bool isFrameView() const { return false; }
     virtual bool isRemoteFrameView() const { return false; }
     virtual bool isPluginView() const { return false; }
     virtual bool isPluginContainer() const { return false; }
     virtual bool pluginShouldPersist() const { return false; }
     virtual bool isScrollbar() const { return false; }
-    virtual bool isScrollView() const { return false; }
 
     virtual HostWindow* hostWindow() const { ASSERT_NOT_REACHED(); return 0; }
     virtual void setParent(Widget*);
     Widget* parent() const { return m_parent; }
     Widget* root() const;
 
     virtual void handleEvent(Event*) { }
 
     // It is important for cross-platform code to realize that Mac has flipped coordinates. Therefore any code
     // that tries to convert the location of a rect using the point-based convertFromContainingWindow will end
     // up with an inaccurate rect. Always make sure to use the rect-based convertFromContainingWindow method
     // when converting window rects.
     IntRect convertToContainingWindow(const IntRect&) const;
     IntRect convertFromContainingWindow(const IntRect&) const;
 
     IntPoint convertToContainingWindow(const IntPoint&) const;
     IntPoint convertFromContainingWindow(const IntPoint&) const;
     FloatPoint convertFromContainingWindow(const FloatPoint&) const;
 
     virtual void frameRectsChanged() { }
 
     // Notifies this widget that other widgets on the page have been repositioned.
     virtual void widgetPositionsUpdated() { }
 
-    // Virtual methods to convert points to/from the containing ScrollView
+    // Virtual methods to convert points to/from the containing Widget
     virtual IntRect convertToContainingView(const IntRect&) const;
     virtual IntRect convertFromContainingView(const IntRect&) const;
     virtual IntPoint convertToContainingView(const IntPoint&) const;
     virtual IntPoint convertFromContainingView(const IntPoint&) const;
 
     // Virtual methods to convert points to/from child widgets
     virtual IntPoint convertChildToSelf(const Widget*, const IntPoint&) const;
     virtual IntPoint convertSelfToChild(const Widget*, const IntPoint&) const;
 
     // Notifies this widget that it will no longer be receiving events.
     virtual void eventListenersRemoved() { }
 
 #if ENABLE(OILPAN)
     virtual void detach() { }
 #endif
 
 private:
     Widget* m_parent;
     IntRect m_frame;
     bool m_selfVisible;
     bool m_parentVisible;
 };
 
 } // namespace blink
 
 #endif // Widget_h