Send boundary events before gotpointercapture

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

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/input/PointerEventManager.h"
 
 #include "core/dom/DocumentUserGestureToken.h"
 #include "core/dom/ElementTraversal.h"
 #include "core/dom/shadow/FlatTreeTraversal.h"
 #include "core/events/MouseEvent.h"
@@ skipping 556 matching lines @@
     // Re-target lostpointercapture to the document when the element is
     // no longer participating in the tree.
     EventTarget* target = pointerCaptureTarget;
     if (target->toNode() && !target->toNode()->isConnected()) {
       target = target->toNode()->ownerDocument();
     }
     dispatchPointerEvent(target,
                          m_pointerEventFactory.createPointerCaptureEvent(
                              pointerEvent, EventTypeNames::lostpointercapture));
   }
-  // Note that If pendingPointerCaptureTarget is null dispatchPointerEvent
-  // automatically does nothing.
-  dispatchPointerEvent(pendingPointerCaptureTarget,
-                       m_pointerEventFactory.createPointerCaptureEvent(
-                           pointerEvent, EventTypeNames::gotpointercapture));
 
-  if (pendingPointerCaptureTarget)
+  if (pendingPointerCaptureTarget) {
+    setNodeUnderPointer(pointerEvent, pendingPointerCaptureTarget);
+    dispatchPointerEvent(pendingPointerCaptureTarget,
+                         m_pointerEventFactory.createPointerCaptureEvent(
+                             pointerEvent, EventTypeNames::gotpointercapture));
     m_pointerCaptureTarget.set(pointerId, pendingPointerCaptureTarget);
-  else
+  } else {
     m_pointerCaptureTarget.remove(pointerId);
+  }
 }
 
 void PointerEventManager::removeTargetFromPointerCapturingMapping(
     PointerCapturingMap& map,
     const EventTarget* target) {
   // We could have kept a reverse mapping to make this deletion possibly
   // faster but it adds some code complication which might not be worth of
   // the performance improvement considering there might not be a lot of
   // active pointer or pointer captures at the same time.
   PointerCapturingMap tmp = map;
@@ skipping 93 matching lines @@
     uint32_t firstId = m_touchIdsForCanceledPointerdowns.first();
     if (firstId > uniqueTouchEventId)
       return false;
     m_touchIdsForCanceledPointerdowns.takeFirst();
     if (firstId == uniqueTouchEventId)
       return true;
   }
   return false;
 }
 
-EventTarget* PointerEventManager::getMouseCapturingNode() {
-  return getCapturingNode(PointerEventFactory::s_mouseId);
-}
-
 }  // namespace blink