Add EventHandlerRegistry

Source/core/frame/DOMWindow.cpp

Index: Source/core/frame/DOMWindow.cpp
diff --git a/Source/core/frame/DOMWindow.cpp b/Source/core/frame/DOMWindow.cpp
index 6d06eb55dc23eb4c58fbea81676fbce291747dd0..2f049bd37c5e7c0d99ef0f1f5054553dfd7dbfea 100644
--- a/Source/core/frame/DOMWindow.cpp
+++ b/Source/core/frame/DOMWindow.cpp
@@ -407,13 +407,6 @@ PassRefPtr<Document> DOMWindow::installNewDocument(const String& mimeType, const
     }
 
     m_frame->selection().updateSecureKeyboardEntryIfActive();
-
-    if (m_frame->isMainFrame()) {
-        m_frame->notifyChromeClientWheelEventHandlerCountChanged();
-        if (m_document->hasTouchEventHandlers())
-            m_frame->host()->chrome().client().needTouchEvents(true);
-    }
-
     return m_document;
 }
 
@@ -1521,9 +1514,7 @@ bool DOMWindow::addEventListener(const AtomicString& eventType, PassRefPtr<Event
 
     if (Document* document = this->document()) {
         document->addListenerTypeIfNeeded(eventType);
-        if (isTouchEventType(eventType))
-            document->didAddTouchEventHandler(document);
-        else if (eventType == EventTypeNames::storage)
+        if (eventType == EventTypeNames::storage)
             didAddStorageEventListener(this);
     }
 
@@ -1553,11 +1544,6 @@ bool DOMWindow::removeEventListener(const AtomicString& eventType, EventListener
     if (!EventTarget::removeEventListener(eventType, listener, useCapture))
         return false;
 
-    if (Document* document = this->document()) {
-        if (isTouchEventType(eventType))
-            document->didRemoveTouchEventHandler(document);
-    }
-
     lifecycleNotifier().notifyRemoveEventListener(this, eventType);
 
     if (eventType == EventTypeNames::unload) {
@@ -1619,9 +1605,6 @@ void DOMWindow::removeAllEventListeners()
 
     lifecycleNotifier().notifyRemoveAllEventListeners(this);
 
-    if (Document* document = this->document())
-        document->didClearTouchEventHandlers(document);
-
     removeAllUnloadEventListeners(this);
     removeAllBeforeUnloadEventListeners(this);
 }