Remove top controls clipping adjustment for document.rootScroller

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 24 matching lines @@
 DEFINE_TRACE(TopDocumentRootScrollerController) {
   visitor->trace(m_viewportApplyScroll);
   visitor->trace(m_globalRootScroller);
   visitor->trace(m_page);
 }
 
 void TopDocumentRootScrollerController::didChangeRootScroller() {
   recomputeGlobalRootScroller();
 }
 
-void TopDocumentRootScrollerController::mainFrameViewResized() {
-  Element* rootScroller = globalRootScroller();
-
-  ScrollableArea* area =
-      RootScrollerUtil::scrollableAreaForRootScroller(rootScroller);
-
-  if (!area)
-    return;
-
-  if (PaintLayer* layer = area->layer()) {
-    layer->setNeedsCompositingInputsUpdate();
-
-    // This is needed if the root scroller is an iframe, since the iframe
-    // doesn't have a scrolling/clip layer, its PLC has a container layer that
-    // needs to be resized instead.
-    layer->compositor()->frameViewDidChangeSize();
-  }
-}
-
 ScrollableArea* TopDocumentRootScrollerController::rootScrollerArea() const {
   return RootScrollerUtil::scrollableAreaForRootScroller(globalRootScroller());
 }
 
 IntSize TopDocumentRootScrollerController::rootScrollerVisibleArea() const {
   if (!topDocument() || !topDocument()->view())
     return IntSize();
 
   float minimumPageScale =
       m_page->pageScaleConstraintsSet().finalConstraints().minimumScale;
@@ skipping 149 matching lines @@
 
 PaintLayer* TopDocumentRootScrollerController::rootScrollerPaintLayer() const {
   return RootScrollerUtil::paintLayerForRootScroller(m_globalRootScroller);
 }
 
 Element* TopDocumentRootScrollerController::globalRootScroller() const {
   return m_globalRootScroller.get();
 }
 
 }  // namespace blink