(NOT FOR REVIEW) Distinguish between touch and touchmove handler presence

Source/core/frame/EventHandlerRegistry.cpp

Index: Source/core/frame/EventHandlerRegistry.cpp
diff --git a/Source/core/frame/EventHandlerRegistry.cpp b/Source/core/frame/EventHandlerRegistry.cpp
index 8c3098603fd1650e68f676ec24e1f0fdeb5d8720..c77f1c7b0a452825756c0199ece93fe5052b623a 100644
--- a/Source/core/frame/EventHandlerRegistry.cpp
+++ b/Source/core/frame/EventHandlerRegistry.cpp
@@ -56,6 +56,8 @@ bool EventHandlerRegistry::eventTypeToClass(const AtomicString& eventType, Event
         *result = ScrollEvent;
     } else if (eventType == EventTypeNames::wheel || eventType == EventTypeNames::mousewheel) {
         *result = WheelEvent;
+    } else if (eventType == EventTypeNames::touchmove || eventType == EventTypeNames::pointermove) {
+        *result = TouchMoveEvent;
     } else if (isTouchEventType(eventType)) {
         *result = TouchEvent;
     } else if (isPointerEventType(eventType)) {
@@ -210,6 +212,9 @@ void EventHandlerRegistry::notifyHasHandlersChanged(EventHandlerClass handlerCla
     case TouchEvent:
         m_frameHost->chromeClient().needTouchEvents(hasActiveHandlers);
         break;
+    case TouchMoveEvent:
+        m_frameHost->chromeClient().needTouchMoveEvents(hasActiveHandlers);
+        break;
 #if ENABLE(ASSERT)
     case EventsForTesting:
         break;
@@ -223,7 +228,7 @@ void EventHandlerRegistry::notifyHasHandlersChanged(EventHandlerClass handlerCla
 void EventHandlerRegistry::notifyDidAddOrRemoveEventHandlerTarget(EventHandlerClass handlerClass)
 {
     ScrollingCoordinator* scrollingCoordinator = m_frameHost->page().scrollingCoordinator();
-    if (scrollingCoordinator && handlerClass == TouchEvent)
+    if (scrollingCoordinator && (handlerClass == TouchEvent || handlerClass == TouchMoveEvent))
         scrollingCoordinator->touchEventTargetRectsDidChange();
 }