Suppressed MEs for gestures from cancelled PEs

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

Index: third_party/WebKit/Source/core/input/PointerEventManager.h
diff --git a/third_party/WebKit/Source/core/input/PointerEventManager.h b/third_party/WebKit/Source/core/input/PointerEventManager.h
index 25426910387acfea5041238aafff449ac4a50384..6d818bb9d9858903a7a6123847a3bde1a39de8b5 100644
--- a/third_party/WebKit/Source/core/input/PointerEventManager.h
+++ b/third_party/WebKit/Source/core/input/PointerEventManager.h
@@ -66,6 +66,11 @@ public:
     // Returns whether there is any touch on the screen.
     bool isAnyTouchActive() const;
 
+    // Returns true if the primary pointerdown corresponding to the given
+    // |uniqueTouchEventId| was canceled. Also drops stale ids from
+    // |m_touchIdsForCanceledPointerdowns|.
+    bool primaryPointerdownCanceled(uint32_t uniqueTouchEventId);
+
 private:
     typedef HeapHashMap<int, Member<EventTarget>, WTF::IntHash<int>,
         WTF::UnsignedWithZeroKeyHashTraits<int>> PointerCapturingMap;
@@ -162,6 +167,8 @@ private:
     // all touch-points become inactive.
     bool m_inCanceledStateForPointerTypeTouch;
 
+    Deque<uint32_t> m_touchIdsForCanceledPointerdowns;
+
     // Note that this map keeps track of node under pointer with id=1 as well
     // which might be different than m_nodeUnderMouse in EventHandler. That one
     // keeps track of any compatibility mouse event positions but this map for
@@ -172,9 +179,9 @@ private:
 
     PointerCapturingMap m_pointerCaptureTarget;
     PointerCapturingMap m_pendingPointerCaptureTarget;
+
     PointerEventFactory m_pointerEventFactory;
     TouchEventManager m_touchEventManager;
-
 };
 
 } // namespace blink