diff --git third_party/WebKit/Source/core/input/PointerEventManager.cpp third_party/WebKit/Source/core/input/PointerEventManager.cpp
index 6e0a75cf93c3..403b019db4ee 100644
--- third_party/WebKit/Source/core/input/PointerEventManager.cpp
+++ third_party/WebKit/Source/core/input/PointerEventManager.cpp
@@ -269,7 +269,7 @@ void PointerEventManager::HandlePointerInterruption(
   for (auto pointer_event : canceled_pointer_events) {
     // If we are sending a pointercancel we have sent the pointerevent to some
     // target before.
-    DCHECK(node_under_pointer_.Contains(pointer_event->pointerId()));
+    // DCHECK(node_under_pointer_.Contains(pointer_event->pointerId()));
     EventTarget* target =
         node_under_pointer_.at(pointer_event->pointerId()).target;