Move FrameHost::m_globalRootScrollerController to Page

third_party/WebKit/Source/core/frame/FrameHost.cpp

Index: third_party/WebKit/Source/core/frame/FrameHost.cpp
diff --git a/third_party/WebKit/Source/core/frame/FrameHost.cpp b/third_party/WebKit/Source/core/frame/FrameHost.cpp
index d2c4765f8bd7dcac8f20e722cca9432ffc2f60ed..ec7e30fa8af9b2aee811c49a0c2e504c9bcc4b90 100644
--- a/third_party/WebKit/Source/core/frame/FrameHost.cpp
+++ b/third_party/WebKit/Source/core/frame/FrameHost.cpp
@@ -36,7 +36,6 @@
 #include "core/inspector/ConsoleMessageStorage.h"
 #include "core/page/Page.h"
 #include "core/page/scrolling/OverscrollController.h"
-#include "core/page/scrolling/TopDocumentRootScrollerController.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebScheduler.h"
 
@@ -54,8 +53,6 @@ FrameHost::FrameHost(Page& page)
                                        m_page->chromeClient())),
       m_eventHandlerRegistry(new EventHandlerRegistry(page)),
       m_consoleMessageStorage(new ConsoleMessageStorage()),
-      m_globalRootScrollerController(
-          TopDocumentRootScrollerController::create(page)),
       m_subframeCount(0) {}
 
 // Explicitly in the .cpp to avoid default constructor in .h
@@ -111,7 +108,7 @@ const ConsoleMessageStorage& FrameHost::consoleMessageStorage() const {
 
 TopDocumentRootScrollerController& FrameHost::globalRootScrollerController()
     const {
-  return *m_globalRootScrollerController;
+  return page().globalRootScrollerController();
 }
 
 DEFINE_TRACE(FrameHost) {
@@ -120,7 +117,6 @@ DEFINE_TRACE(FrameHost) {
   visitor->trace(m_overscrollController);
   visitor->trace(m_eventHandlerRegistry);
   visitor->trace(m_consoleMessageStorage);
-  visitor->trace(m_globalRootScrollerController);
 }
 
 #if DCHECK_IS_ON()