Rename platform/Widget to platform/FrameViewBase in core.

third_party/WebKit/Source/core/layout/LayoutScrollbar.cpp

 /*
  * Copyright (C) 2008, 2009 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 81 matching lines @@
   visitor->trace(m_styleSource);
   Scrollbar::trace(visitor);
 }
 
 LayoutBox* LayoutScrollbar::styleSource() const {
   return m_styleSource && m_styleSource->layoutObject()
              ? m_styleSource->layoutObject()->enclosingBox()
              : 0;
 }
 
-void LayoutScrollbar::setParent(Widget* parent) {
+void LayoutScrollbar::setParent(FrameViewBase* parent) {
   Scrollbar::setParent(parent);
   if (!parent) {
     // Destroy all of the scrollbar's LayoutBoxes.
     updateScrollbarParts(true);
   }
 }
 
 void LayoutScrollbar::setEnabled(bool e) {
   bool wasEnabled = enabled();
   Scrollbar::setEnabled(e);
@@ skipping 275 matching lines @@
   }
 }
 
 void LayoutScrollbar::setVisualRect(const LayoutRect& rect) {
   Scrollbar::setVisualRect(rect);
   for (auto& part : m_parts)
     part.value->setPreviousVisualRect(rect);
 }
 
 }  // namespace blink