Adding |Node::layoutObject()| null check to |setCaretAtHitTestResult()|

third_party/WebKit/Source/core/input/GestureManager.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/GestureManager.h"
 
 #include "core/dom/Document.h"
 #include "core/dom/DocumentUserGestureToken.h"
 #include "core/editing/SelectionController.h"
 #include "core/events/GestureEvent.h"
@@ skipping 300 matching lines @@
   bool hitTestContainsLinks = hitTestResult.URLElement() ||
                               !hitTestResult.absoluteImageURL().isNull() ||
                               !hitTestResult.absoluteMediaURL().isNull();
 
   if (!hitTestContainsLinks &&
       m_mouseEventManager->handleDragDropIfPossible(targetedEvent)) {
     m_longTapShouldInvokeContextMenu = true;
     return WebInputEventResult::HandledSystem;
   }
 
-  if (m_selectionController->handleGestureLongPress(gestureEvent,
+  Node* innerNode = hitTestResult.innerNode();
+  if (innerNode && innerNode->layoutObject() &&
+      m_selectionController->handleGestureLongPress(gestureEvent,
                                                     hitTestResult)) {
     m_mouseEventManager->focusDocumentView();
     return WebInputEventResult::HandledSystem;
   }
 
   return sendContextMenuEventForGesture(targetedEvent);
 }
 
 WebInputEventResult GestureManager::handleGestureLongTap(
     const GestureEventWithHitTestResults& targetedEvent) {
 #if !OS(ANDROID)
   if (m_longTapShouldInvokeContextMenu) {
     m_longTapShouldInvokeContextMenu = false;
-    m_selectionController->handleGestureLongTap(targetedEvent);
+    Node* innerNode = targetedEvent.hitTestResult().innerNode();
+    if (innerNode && innerNode->layoutObject())
+      m_selectionController->handleGestureLongTap(targetedEvent);
     return sendContextMenuEventForGesture(targetedEvent);
   }
 #endif
   return WebInputEventResult::NotHandled;
 }
 
 WebInputEventResult GestureManager::handleGestureTwoFingerTap(
     const GestureEventWithHitTestResults& targetedEvent) {
-  m_selectionController->handleGestureTwoFingerTap(targetedEvent);
+  Node* innerNode = targetedEvent.hitTestResult().innerNode();
+  if (innerNode && innerNode->layoutObject())
+    m_selectionController->handleGestureTwoFingerTap(targetedEvent);
   return sendContextMenuEventForGesture(targetedEvent);
 }
 
 WebInputEventResult GestureManager::sendContextMenuEventForGesture(
     const GestureEventWithHitTestResults& targetedEvent) {
   const PlatformGestureEvent& gestureEvent = targetedEvent.event();
   unsigned modifiers = gestureEvent.getModifiers();
 
   if (!m_suppressMouseEventsFromGestures) {
     // Send MouseMoved event prior to handling (https://crbug.com/485290).
@@ skipping 47 matching lines @@
     return nullptr;
 
   return &m_frame->page()->frameHost();
 }
 
 double GestureManager::getLastShowPressTimestamp() const {
   return m_lastShowPressTimestamp;
 }
 
 }  // namespace blink