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

Source/core/input/EventHandler.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 3853 matching lines @@
             if (effectiveTouchAction != TouchActionAuto)
                 m_frame->page()->chromeClient().setTouchAction(effectiveTouchAction);
         }
     }
 
     m_touchPressed = !allTouchReleased;
 
     // If there's no document receiving touch events, or no handlers on the
     // document set to receive the events, then we can skip all the rest of
     // this work.
-    if (!m_touchSequenceDocument || !m_touchSequenceDocument->frameHost() || !m_touchSequenceDocument->frameHost()->eventHandlerRegistry().hasEventHandlers(EventHandlerRegistry::TouchEvent) || !m_touchSequenceDocument->frame()) {
+    if (!m_touchSequenceDocument
+        || !m_touchSequenceDocument->frame()
+        || !m_touchSequenceDocument->frameHost()
+        || !(m_touchSequenceDocument->frameHost()->eventHandlerRegistry().hasEventHandlers(EventHandlerRegistry::TouchEvent)
+            || m_touchSequenceDocument->frameHost()->eventHandlerRegistry().hasEventHandlers(EventHandlerRegistry::TouchMoveEvent))) {
         if (allTouchReleased) {
             m_touchSequenceDocument.clear();
             m_touchSequenceUserGestureToken.clear();
         }
         return false;
     }
 
     // Compute and store the common info used by both PointerEvent and TouchEvent.
     WillBeHeapVector<TouchInfo> touchInfos(points.size());
 
@@ skipping 145 matching lines @@
 unsigned EventHandler::accessKeyModifiers()
 {
 #if OS(MACOSX)
     return PlatformEvent::CtrlKey | PlatformEvent::AltKey;
 #else
     return PlatformEvent::AltKey;
 #endif
 }
 
 } // namespace blink