Create user gesture indicator for pointerup

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

Index: third_party/WebKit/Source/core/input/PointerEventManager.cpp
diff --git a/third_party/WebKit/Source/core/input/PointerEventManager.cpp b/third_party/WebKit/Source/core/input/PointerEventManager.cpp
index 5412a7958e67e1d03fd707b721ea9e5f6f155612..4ea4323eb94b90958605dd06b19ef04a2743f0d4 100644
--- a/third_party/WebKit/Source/core/input/PointerEventManager.cpp
+++ b/third_party/WebKit/Source/core/input/PointerEventManager.cpp
@@ -168,6 +168,13 @@ WebInputEventResult PointerEventManager::dispatchPointerEvent(
       UseCounter::count(m_frame->document(),
                         UseCounter::PointerEventDispatchPointerDown);
 
+    std::unique_ptr<UserGestureIndicator> gestureIndicator;
+    if (eventType == EventTypeNames::pointerup &&
+        pointerEvent->pointerType() == "touch") {
+      gestureIndicator =
+          wrapUnique(new UserGestureIndicator(DefinitelyProcessingUserGesture));
+    }
+
     DispatchEventResult dispatchResult = target->dispatchEvent(pointerEvent);
     return EventHandlingUtil::toWebInputEventResult(dispatchResult);
   }