Return Frame&, not Frame* from RenderView::frame()

Source/core/platform/Scrollbar.cpp

 /*
  * Copyright (C) 2004, 2006, 2008 Apple 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.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 424 matching lines @@
 
     if (m_scrollableArea) {
         // m_hoveredPart won't be updated until the next mouseMoved or mouseDown, so we have to hit test
         // to really know if the mouse has exited the scrollbar on a mouseUp.
         ScrollbarPart part = theme()->hitTest(this, mouseEvent.position());
         if (part == NoPart)
             m_scrollableArea->mouseExitedScrollbar(this);
     }
 
     if (parent() && parent()->isFrameView())
-        toFrameView(parent())->frame()->eventHandler()->setMousePressed(false);
+        toFrameView(parent())->frame().eventHandler()->setMousePressed(false);
 }
 
 void Scrollbar::mouseDown(const PlatformMouseEvent& evt)
 {
     // Early exit for right click
     if (evt.button() == RightButton)
         return;
 
     setPressedPart(theme()->hitTest(this, evt.position()));
     int pressedPos = (orientation() == HorizontalScrollbar ? convertFromContainingWindow(evt.position()).x() : convertFromContainingWindow(evt.position()).y());
@@ skipping 139 matching lines @@
     if (!m_scrollableArea)
         return 0;
 
     if (m_orientation == HorizontalScrollbar)
         return m_scrollableArea->scrollPosition().x() - m_scrollableArea->minimumScrollPosition().x();
 
     return m_scrollableArea->scrollPosition().y() - m_scrollableArea->minimumScrollPosition().y();
 }
 
 } // namespace WebCore