Touch event flag should control only DOM event firing.

ui/base/touch/touch_enabled.cc

 // Copyright 2015 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 "ui/base/touch/touch_enabled.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "ui/base/touch/touch_device.h"
 #include "ui/base/ui_base_switches.h"
 #include "ui/events/base_event_utils.h"
 #include "ui/events/event_switches.h"
 
 namespace ui {
 
 namespace {
 
 enum class TouchEventsStatus {
   AUTO,
   DISABLED,
   ENABLED,
 };
 
-TouchEventsStatus ComputeTouchFlagStatus() {
+TouchEventsStatus ComputeTouchAPIFlagStatus() {
   auto* command_line = base::CommandLine::ForCurrentProcess();
   const std::string touch_enabled_switch =
       command_line->HasSwitch(switches::kTouchEvents) ?
           command_line->GetSwitchValueASCII(switches::kTouchEvents) :
           switches::kTouchEventsAuto;
 
   if (touch_enabled_switch.empty() ||
       touch_enabled_switch == switches::kTouchEventsEnabled) {
     return TouchEventsStatus::ENABLED;
   }
 
   if (touch_enabled_switch == switches::kTouchEventsAuto)
     return TouchEventsStatus::AUTO;
 
   DLOG_IF(ERROR, touch_enabled_switch != switches::kTouchEventsDisabled) <<
       "Invalid --touch-events option: " << touch_enabled_switch;
   return TouchEventsStatus::DISABLED;
 }
 
 }  // namespace
 
-bool AreTouchEventsEnabled() {
-  static TouchEventsStatus touch_flag_status = ComputeTouchFlagStatus();
+bool IsTouchAPIEnabled() {
+  static TouchEventsStatus touch_flag_status = ComputeTouchAPIFlagStatus();
 
   // The #touch-events flag is used to force and simulate the presence or
   // absence of touch devices. Only if the flag is set to AUTO, we need to check
   // for the actual availability of touch devices.
   if (touch_flag_status == TouchEventsStatus::AUTO)
     return GetTouchScreensAvailability() == TouchScreensAvailability::ENABLED;

[mustaq, 2016/11/03 18:10:49]

IsTouchAPIEnabled() shouldn't depend on touch screen availability. I guess
considering AUTO being enabled should work.

 
   return touch_flag_status == TouchEventsStatus::ENABLED;
 }
 
 }  // namespace ui
-