Move TopDocumentRootScrollerController to a separate object on FrameHost

third_party/WebKit/Source/web/WebViewImpl.cpp

 /*
  * Copyright (C) 2011, 2012 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 69 matching lines @@
 #include "core/page/DragController.h"
 #include "core/page/DragData.h"
 #include "core/page/DragSession.h"
 #include "core/page/FocusController.h"
 #include "core/page/FrameTree.h"
 #include "core/page/Page.h"
 #include "core/page/PagePopupClient.h"
 #include "core/page/PointerLockController.h"
 #include "core/page/ScopedPageLoadDeferrer.h"
 #include "core/page/TouchDisambiguation.h"
-#include "core/page/scrolling/RootScrollerController.h"
+#include "core/page/scrolling/TopDocumentRootScrollerController.h"
 #include "core/paint/PaintLayer.h"
 #include "core/timing/DOMWindowPerformance.h"
 #include "core/timing/Performance.h"
 #include "modules/accessibility/AXObject.h"
 #include "modules/accessibility/AXObjectCacheImpl.h"
 #include "modules/credentialmanager/CredentialManagerClient.h"
 #include "modules/encryptedmedia/MediaKeysController.h"
 #include "modules/storage/StorageNamespaceController.h"
 #include "modules/webgl/WebGLRenderingContext.h"
 #include "platform/ContextMenu.h"
@@ skipping 4115 matching lines @@
 
     if (!page()->mainFrame() || !page()->mainFrame()->isLocalFrame())
         return;
 
     Document* document = page()->deprecatedLocalMainFrame()->document();
 
     DCHECK(document);
 
     // Get the outer viewport scroll layer.
     GraphicsLayer* layoutViewportScrollLayer =
-        document->rootScrollerController()->rootScrollerLayer();
+        page()->frameHost().globalRootScrollerController().rootScrollerLayer();
     WebLayer* layoutViewportWebLayer = layoutViewportScrollLayer
         ? layoutViewportScrollLayer->platformLayer()
         : nullptr;
 
     VisualViewport& visualViewport = page()->frameHost().visualViewport();
 
     // TODO(bokan): This was moved here from when registerViewportLayers was a
     // part of VisualViewport and maybe doesn't belong here. See comment inside
     // the mehtod.
     visualViewport.setScrollLayerOnScrollbars(layoutViewportWebLayer);
@@ skipping 368 matching lines @@
         return nullptr;
     return focusedFrame;
 }
 
 LocalFrame* WebViewImpl::focusedLocalFrameAvailableForIme() const
 {
     return m_imeAcceptEvents ? focusedLocalFrameInWidget() : nullptr;
 }
 
 } // namespace blink