Stricter user gestures for touch - measure and warn

third_party/WebKit/Source/core/input/EventHandler.h

 /*
  * Copyright (C) 2006, 2007, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *
  * 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.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 68 matching lines @@
 class ScrollableArea;
 class Scrollbar;
 class ScrollState;
 class SelectionController;
 class TextEvent;
 class WheelEvent;
 class Widget;
 
 enum class DragInitiator;
 
-class CORE_EXPORT EventHandler final : public NoBaseWillBeGarbageCollectedFinalized<EventHandler> {
+class CORE_EXPORT EventHandler final : public NoBaseWillBeGarbageCollectedFinalized<EventHandler>
+    , public UserGestureUsedCallback {
     WTF_MAKE_NONCOPYABLE(EventHandler);
     USING_FAST_MALLOC_WILL_BE_REMOVED(EventHandler);
 public:
     explicit EventHandler(LocalFrame*);
     ~EventHandler();
     DECLARE_TRACE();
 
     void clear();
     void nodeWillBeRemoved(Node&);
 
@@ skipping 98 matching lines @@
     bool handleTextInputEvent(const String& text, Event* underlyingEvent = nullptr, TextEventInputType = TextEventInputKeyboard);
     void defaultTextInputEventHandler(TextEvent*);
 
     void dragSourceEndedAt(const PlatformMouseEvent&, DragOperation);
 
     void focusDocumentView();
 
     void capsLockStateMayHaveChanged(); // Only called by FrameSelection
 
     WebInputEventResult handleTouchEvent(const PlatformTouchEvent&);
+    void userGestureUsed();
 
     bool useHandCursor(Node*, bool isOverLink);
 
     void notifyElementActivated();
 
     PassRefPtr<UserGestureToken> takeLastMouseDownGestureToken() { return m_lastMouseDownUserGestureToken.release(); }
 
     int clickCount() { return m_clickCount; }
 
     SelectionController& selectionController() const { return *m_selectionController; }
@@ skipping 260 matching lines @@
     // scroll which shouldn't propagate can't cause any element to
     // scroll other than the |m_previousGestureScrolledNode|.
     bool m_deltaConsumedForScrollSequence;
 };
 
 } // namespace blink
 
 WTF_ALLOW_INIT_WITH_MEM_FUNCTIONS(blink::EventHandler::TouchInfo);
 
 #endif // EventHandler_h