Don't log a console warning when touch-action is used.

third_party/WebKit/Source/core/events/TouchEvent.cpp

 /*
  * Copyright 2008, The Android Open Source Project
  * Copyright (C) 2012 Research In Motion Limited. 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.
  *  * Redistributions in binary form must reproduce the above copyright
@@ skipping 181 matching lines @@
                        TouchTargetAndDispatchResultTypeMax));
   rootDocumentListenerHistogram.count(
       static_cast<TouchTargetAndDispatchResultType>(result));
 }
 
 }  // namespace
 
 TouchEvent::TouchEvent()
     : m_causesScrollingIfUncanceled(false),
       m_firstTouchMoveOrStart(false),
-      m_defaultPreventedBeforeCurrentTarget(false) {}
+      m_defaultPreventedBeforeCurrentTarget(false),
+      m_currentTouchAction(TouchActionAuto) {}
 
 TouchEvent::TouchEvent(TouchList* touches,
                        TouchList* targetTouches,
                        TouchList* changedTouches,
                        const AtomicString& type,
                        AbstractView* view,
                        PlatformEvent::Modifiers modifiers,
                        bool cancelable,
                        bool causesScrollingIfUncanceled,
                        bool firstTouchMoveOrStart,
@@ skipping 20 matching lines @@
       m_currentTouchAction(currentTouchAction) {}
 
 TouchEvent::TouchEvent(const AtomicString& type,
                        const TouchEventInit& initializer)
     : UIEventWithKeyState(type, initializer),
       m_touches(TouchList::create(initializer.touches())),
       m_targetTouches(TouchList::create(initializer.targetTouches())),
       m_changedTouches(TouchList::create(initializer.changedTouches())),
       m_causesScrollingIfUncanceled(false),
       m_firstTouchMoveOrStart(false),
-      m_defaultPreventedBeforeCurrentTarget(false) {}
+      m_defaultPreventedBeforeCurrentTarget(false),
+      m_currentTouchAction(TouchActionAuto) {}
 
 TouchEvent::~TouchEvent() {}
 
 const AtomicString& TouchEvent::interfaceName() const {
   return EventNames::TouchEvent;
 }
 
 bool TouchEvent::isTouchEvent() const {
   return true;
 }
@@ skipping 51 matching lines @@
   return TouchEventDispatchMediator::create(this);
 }
 
 DEFINE_TRACE(TouchEvent) {
   visitor->trace(m_touches);
   visitor->trace(m_targetTouches);
   visitor->trace(m_changedTouches);
   UIEventWithKeyState::trace(visitor);
 }
 
+bool TouchEvent::shouldLogPassiveDevtoolsWarning() const {
+  return m_currentTouchAction == TouchActionAuto;

[Rick Byers, 2016/11/22 20:40:33]

nit: add a comment explaining why we disable the warning in this case.  It is a
bit of a heuristic - it's possible the warning still applies.

+}
+
 TouchEventDispatchMediator* TouchEventDispatchMediator::create(
     TouchEvent* touchEvent) {
   return new TouchEventDispatchMediator(touchEvent);
 }
 
 TouchEventDispatchMediator::TouchEventDispatchMediator(TouchEvent* touchEvent)
     : EventDispatchMediator(touchEvent) {}
 
 TouchEvent& TouchEventDispatchMediator::event() const {
   return toTouchEvent(EventDispatchMediator::event());
 }
 
 DispatchEventResult TouchEventDispatchMediator::dispatchEvent(
     EventDispatcher& dispatcher) const {
   event().eventPath().adjustForTouchEvent(event());
   return dispatcher.dispatch();
 }
 
 }  // namespace blink