Fixed clip resize for document.rootScroller with inertTopControls

third_party/WebKit/Source/core/page/scrolling/TopDocumentRootScrollerController.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 TopDocumentRootScrollerController_h
 #define TopDocumentRootScrollerController_h
 
 #include "core/CoreExport.h"
 #include "core/page/scrolling/RootScrollerController.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
 class Element;
 class FrameHost;
 class GraphicsLayer;
+class PaintLayer;
 class RootFrameViewport;
 class ScrollStateCallback;
 class ViewportScrollCallback;
 
 // This class manages the the page level aspects of the root scroller.  That
 // is, given all the iframes on a page and their individual root scrollers,
 // this class will determine which ultimate Element should be used as the root
 // scroller and ensures that Element is used to scroll browser controls and
 // provide overscroll effects.
 // TODO(bokan): This class is currently OOPIF unaware. crbug.com/642378.
@@ skipping 16 matching lines @@
   // Returns true if the given ScrollStateCallback is the
   // ViewportScrollCallback managed by this class.
   // TODO(bokan): Temporarily needed to allow ScrollCustomization to
   // differentiate between real custom callback and the built-in viewport
   // apply scroll. crbug.com/623079.
   bool isViewportScrollCallback(const ScrollStateCallback*) const;
 
   // Returns the GraphicsLayer for the global root scroller.
   GraphicsLayer* rootScrollerLayer() const;
 
+  PaintLayer* rootScrollerPaintLayer() const;
+
   // Returns the Element that's the global root scroller.
   Element* globalRootScroller() const;
 
   // Called when the root scroller in any frames on the page has changed.
   void didChangeRootScroller();
 
+  void mainFrameViewResized();
+
  private:
   TopDocumentRootScrollerController(FrameHost&);
 
   // Calculates the Element that should be the globalRootScroller. On a
   // simple page, this will simply the root frame's effectiveRootScroller but
   // if the root scroller is set to an iframe, this will then descend into
   // the iframe to find its effective root scroller.
   Element* findGlobalRootScrollerElement();
 
   // Should be called to ensure the correct element is currently set as the
@@ skipping 15 matching lines @@
   // m_viewportApplyScroll has been created, it will always be set on this
   // Element.
   WeakMember<Element> m_globalRootScroller;
 
   WeakMember<FrameHost> m_frameHost;
 };
 
 }  // namespace blink
 
 #endif  // RootScrollerController_h