Rename classes related to top controls

third_party/WebKit/Source/core/page/scrolling/TopDocumentRootScrollerController.cpp

 // 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.
 
 #include "core/page/scrolling/TopDocumentRootScrollerController.h"
 
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
 #include "core/frame/FrameHost.h"
 #include "core/frame/FrameView.h"
@@ skipping 63 matching lines @@
 
   ScrollableArea* targetScroller = RootScrollerUtil::scrollableAreaFor(*target);
 
   if (!targetScroller)
     return;
 
   if (m_globalRootScroller)
     m_globalRootScroller->removeApplyScroll();
 
   // Use disable-native-scroll since the ViewportScrollCallback needs to
-  // apply scroll actions both before (TopControls) and after (overscroll)
+  // apply scroll actions both before (BrowserControls) and after (overscroll)
   // scrolling the element so it will apply scroll to the element itself.
   target->setApplyScroll(m_viewportApplyScroll, "disable-native-scroll");
 
   // A change in global root scroller requires a compositing inputs update to
   // the new and old global root scroller since it might change how the
   // ancestor layers are clipped. e.g. An iframe that's the global root
   // scroller clips its layers like the root frame.  Normally this is set
   // when the local effective root scroller changes but the global root
   // scroller can change because the parent's effective root scroller
   // changes.
@@ skipping 44 matching lines @@
     return;
 
   // Let the compositor-side counterpart know about this change.
   m_frameHost->chromeClient().registerViewportLayers();
 }
 
 void TopDocumentRootScrollerController::initializeViewportScrollCallback(
     RootFrameViewport& rootFrameViewport) {
   DCHECK(m_frameHost);
   m_viewportApplyScroll = ViewportScrollCallback::create(
-      &m_frameHost->topControls(), &m_frameHost->overscrollController(),
+      &m_frameHost->browserControls(), &m_frameHost->overscrollController(),
       rootFrameViewport);
 
   recomputeGlobalRootScroller();
 }
 
 bool TopDocumentRootScrollerController::isViewportScrollCallback(
     const ScrollStateCallback* callback) const {
   if (!callback)
     return false;
 
@@ skipping 17 matching lines @@
   // the root scroller gets composited.
 
   return graphicsLayer;
 }
 
 Element* TopDocumentRootScrollerController::globalRootScroller() const {
   return m_globalRootScroller.get();
 }
 
 }  // namespace blink