Rename classes related to top controls

third_party/WebKit/Source/core/page/scrolling/RootScrollerController.h

 // Copyright 2016 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 RootScrollerController_h
 #define RootScrollerController_h
 
 #include "core/CoreExport.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
 class Document;
 class Element;
 class GraphicsLayer;
 class PaintLayer;
 class PaintLayerScrollableArea;
 class ScrollableArea;
 class ScrollStateCallback;
 
 // Manages the root scroller associated with a given document. The root
-// scroller causes top controls movement, overscroll effects and prevents
+// scroller causes browser controls movement, overscroll effects and prevents
 // chaining scrolls up further in the DOM. It can be set from script using
 // document.setRootScroller.
 //
 // There are two notions of a root scroller in this class: m_rootScroller and
 // m_effectiveRootScroller. The former is the Element that was set as the root
 // scroller using document.setRootScroller. If the page didn't set a root
 // scroller this will be nullptr. The "effective" root scroller is the current
 // element we're using internally to apply viewport scrolling actions.  The
 // effective root scroller will only be null during document initialization.
 // Both these elements come from this controller's associated Document. The
-// final "global" root scroller, the one whose scrolling hides top controls,
+// final "global" root scroller, the one whose scrolling hides browser controls,
 // may be in a different frame.
 //
 // If the currently set m_rootScroller is a valid element to become the root
 // scroller, it will be promoted to the effective root scroller. If it is not
 // valid, the effective root scroller will fall back to a default Element (see
 // defaultEffectiveRootScroller()). The rules for what makes an element a valid
 // root scroller are set in isValidRootScroller(). The validity of the current
 // root scroller is re-checked after each layout.
 class CORE_EXPORT RootScrollerController
     : public GarbageCollected<RootScrollerController> {
@@ skipping 61 matching lines @@
 
   // The element currently being used as the root scroller in this Document.
   // If the m_rootScroller is valid this will point to it. Otherwise, it'll
   // use a default Element.
   WeakMember<Element> m_effectiveRootScroller;
 };
 
 }  // namespace blink
 
 #endif  // RootScrollerController_h