Replace MouseWheel events with GestureScrollBegin in WebContentsObserver::DidGetUserInteraction

chrome/browser/external_protocol/external_protocol_observer.cc

 // Copyright 2014 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 "chrome/browser/external_protocol/external_protocol_observer.h"
 
 #include "chrome/browser/external_protocol/external_protocol_handler.h"
 
 using content::WebContents;
 
 DEFINE_WEB_CONTENTS_USER_DATA_KEY(ExternalProtocolObserver);
 
 ExternalProtocolObserver::ExternalProtocolObserver(WebContents* web_contents)
     : content::WebContentsObserver(web_contents) {
 }
 
 ExternalProtocolObserver::~ExternalProtocolObserver() {
 }
 
 void ExternalProtocolObserver::DidGetUserInteraction(
     const blink::WebInputEvent::Type type) {
   // Ignore scroll events for allowing external protocol launch.
-  if (type != blink::WebInputEvent::MouseWheel)
+  if (type != blink::WebInputEvent::GestureScrollBegin)
     ExternalProtocolHandler::PermitLaunchUrl();
 }