Move FrameHost::m_globalRootScrollerController to Page

third_party/WebKit/Source/core/page/Page.cpp

Index: third_party/WebKit/Source/core/page/Page.cpp
diff --git a/third_party/WebKit/Source/core/page/Page.cpp b/third_party/WebKit/Source/core/page/Page.cpp
index 65140b70f936b57305e88f7500b8f5d792536792..5a639d03950f20a7223068c39b92ed557ba5f3f6 100644
--- a/third_party/WebKit/Source/core/page/Page.cpp
+++ b/third_party/WebKit/Source/core/page/Page.cpp
@@ -54,6 +54,7 @@
 #include "core/page/ScopedPageSuspender.h"
 #include "core/page/ValidationMessageClient.h"
 #include "core/page/scrolling/ScrollingCoordinator.h"
+#include "core/page/scrolling/TopDocumentRootScrollerController.h"
 #include "core/paint/PaintLayer.h"
 #include "platform/WebFrameScheduler.h"
 #include "platform/graphics/GraphicsLayer.h"
@@ -105,6 +106,8 @@ Page::Page(PageClients& pageClients)
       m_pageScaleConstraintsSet(PageScaleConstraintsSet::create()),
       m_pointerLockController(PointerLockController::create(this)),
       m_browserControls(BrowserControls::create(*this)),
+      m_globalRootScrollerController(
+          TopDocumentRootScrollerController::create(*this)),
       m_mainFrame(nullptr),
       m_editorClient(pageClients.editorClient),
       m_spellCheckerClient(pageClients.spellCheckerClient),
@@ -171,6 +174,10 @@ const BrowserControls& Page::browserControls() const {
   return *m_browserControls;
 }
 
+TopDocumentRootScrollerController& Page::globalRootScrollerController() const {
+  return *m_globalRootScrollerController;
+}
+
 ClientRectList* Page::nonFastScrollableRects(const LocalFrame* frame) {
   DisableCompositingQueryAsserts disabler;
   if (ScrollingCoordinator* scrollingCoordinator =
@@ -550,6 +557,7 @@ DEFINE_TRACE(Page) {
   visitor->trace(m_pointerLockController);
   visitor->trace(m_scrollingCoordinator);
   visitor->trace(m_browserControls);
+  visitor->trace(m_globalRootScrollerController);
   visitor->trace(m_mainFrame);
   visitor->trace(m_validationMessageClient);
   visitor->trace(m_useCounter);