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 28719781bebce414014301c846301fe9b35afeed..0282b186827a60b0fd57a24facacd722e9a28484 100644
--- a/third_party/WebKit/Source/core/input/PointerEventManager.h
+++ b/third_party/WebKit/Source/core/input/PointerEventManager.h
@@ -65,6 +65,11 @@ 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;
@@ -161,6 +166,8 @@ 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
@@ -171,9 +178,9 @@ private:
 
     PointerCapturingMap m_pointerCaptureTarget;
     PointerCapturingMap m_pendingPointerCaptureTarget;
+
     PointerEventFactory m_pointerEventFactory;
     TouchEventManager m_touchEventManager;
-
 };
 
 } // namespace blink