Non passive touch end or touch cancel listeners should not block scroll.

third_party/WebKit/Source/web/WebPluginContainerImpl.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2014 Opera Software ASA. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 511 matching lines @@
 }
 
 void WebPluginContainerImpl::requestTouchEventType(TouchEventRequestType requestType)
 {
     if (m_touchEventRequestType == requestType || !m_element)
         return;
 
     if (FrameHost* frameHost = m_element->document().frameHost()) {
         EventHandlerRegistry& registry = frameHost->eventHandlerRegistry();
         if (requestType != TouchEventRequestTypeNone && m_touchEventRequestType == TouchEventRequestTypeNone)
-            registry.didAddEventHandler(*m_element, EventHandlerRegistry::TouchEventBlocking);
+            registry.didAddEventHandler(*m_element, EventHandlerRegistry::TouchStartOrMoveEventBlocking);
         else if (requestType == TouchEventRequestTypeNone && m_touchEventRequestType != TouchEventRequestTypeNone)
-            registry.didRemoveEventHandler(*m_element, EventHandlerRegistry::TouchEventBlocking);
+            registry.didRemoveEventHandler(*m_element, EventHandlerRegistry::TouchStartOrMoveEventBlocking);
     }
     m_touchEventRequestType = requestType;
 }
 
 void WebPluginContainerImpl::setWantsWheelEvents(bool wantsWheelEvents)
 {
     if (m_wantsWheelEvents == wantsWheelEvents)
         return;
     if (FrameHost* frameHost = m_element->document().frameHost()) {
         EventHandlerRegistry& registry = frameHost->eventHandlerRegistry();
@@ skipping 394 matching lines @@
         // frame view.
         computeClipRectsForPlugin(m_element, windowRect, clipRect, unobscuredRect);
     }
     getPluginOcclusions(m_element, this->parent(), frameRect(), cutOutRects);
     // Convert to the plugin position.
     for (size_t i = 0; i < cutOutRects.size(); i++)
         cutOutRects[i].move(-frameRect().x(), -frameRect().y());
 }
 
 } // namespace blink