Merge two IsInDocument implementations.

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 11 matching lines @@
 #include "public/platform/WebTouchEvent.h"
 
 namespace blink {
 
 namespace {
 
 size_t ToPointerTypeIndex(WebPointerProperties::PointerType t) {
   return static_cast<size_t>(t);
 }
 
-bool IsInDocument(EventTarget* n) {
-  return n && n->ToNode() && n->ToNode()->isConnected();
-}
-
 Vector<std::pair<WebTouchPoint, TimeTicks>> GetCoalescedPoints(
     const Vector<WebTouchEvent>& coalesced_events,
     int id) {
   Vector<std::pair<WebTouchPoint, TimeTicks>> related_points;
   for (const auto& touch_event : coalesced_events) {
     for (unsigned i = 0; i < touch_event.touches_length; ++i) {
       if (touch_event.touches[i].id == id &&
           touch_event.touches[i].state != WebTouchPoint::kStateStationary) {
         related_points.push_back(std::pair<WebTouchPoint, TimeTicks>(
             touch_event.TouchPointInRootFrame(i),
@@ skipping 443 matching lines @@
     prevent_mouse_event_for_pointer_type_[ToPointerTypeIndex(
         mouse_event.pointer_type)] = true;
   }
 
   if (pointer_event->isPrimary() &&
       !prevent_mouse_event_for_pointer_type_[ToPointerTypeIndex(
           mouse_event.pointer_type)]) {
     EventTarget* mouse_target = effective_target;
     // Event path could be null if pointer event is not dispatched and
     // that happens for example when pointer event feature is not enabled.
-    if (!IsInDocument(mouse_target) && pointer_event->HasEventPath()) {
+    if (!EventHandlingUtil::IsInDocument(mouse_target) &&
+        pointer_event->HasEventPath()) {
       for (const auto& context :
            pointer_event->GetEventPath().NodeEventContexts()) {
-        if (IsInDocument(context.GetNode())) {
+        if (EventHandlingUtil::IsInDocument(context.GetNode())) {
           mouse_target = context.GetNode();
           break;
         }
       }
     }
     result = EventHandlingUtil::MergeEventResult(
         result, mouse_event_manager_->DispatchMouseEvent(
                     mouse_target, mouse_event_type, mouse_event,
                     canvas_region_id, nullptr));
   }
@@ skipping 203 matching lines @@
     if (first_id > unique_touch_event_id)
       return false;
     touch_ids_for_canceled_pointerdowns_.TakeFirst();
     if (first_id == unique_touch_event_id)
       return true;
   }
   return false;
 }
 
 }  // namespace blink