Remove old Aura Gesture Detection Pipeline.

ui/events/event_switches.cc

 // Copyright 2013 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/events/event_switches.h"
 
 namespace switches {
 
 // Enable scroll prediction for scroll update events.
 const char kEnableScrollPrediction[] = "enable-scroll-prediction";
 
 // Enable support for touch events.
 const char kTouchEvents[] = "touch-events";
 
 // The values the kTouchEvents switch may have, as in --touch-events=disabled.
 //   auto: enabled at startup when an attached touchscreen is present.
 const char kTouchEventsAuto[] = "auto";
 //   enabled: touch events always enabled.
 const char kTouchEventsEnabled[] = "enabled";
 //   disabled: touch events are disabled.
 const char kTouchEventsDisabled[] = "disabled";
 
-// Enable the unified gesture detector, instead of the aura gesture detector.
-const char kUnifiedGestureDetector[] = "unified-gesture-detector";
-
-// The values the kUnifiedGestureDetector switch may have, as in
-// --unified-gesture-detector=disabled.
-//   auto: Same as disabled.
-const char kUnifiedGestureDetectorAuto[] = "auto";
-//   enabled: Use the unified gesture detector.
-const char kUnifiedGestureDetectorEnabled[] = "enabled";
-//   disabled: Use the aura gesture detector.
-const char kUnifiedGestureDetectorDisabled[] = "disabled";
-
 // Enable compensation for unstable pinch zoom. Some touch screens display
 // significant amount of wobble when moving a finger in a straight line. This
 // makes two finger scroll trigger an oscillating pinch zoom. See
 // crbug.com/394380 for details.
 const char kCompensateForUnstablePinchZoom[] =
     "compensate-for-unstable-pinch-zoom";
 
 #if defined(OS_LINUX)
 // Tells chrome to interpret events from these devices as touch events. Only
 // available with XInput 2 (i.e. X server 1.8 or above). The id's of the
 // devices can be retrieved from 'xinput list'.
 const char kTouchDevices[] = "touch-devices";
 #endif
 
 #if defined(USE_XI2_MT) || defined(USE_OZONE)
 // The calibration factors given as "<left>,<right>,<top>,<bottom>".
 const char kTouchCalibration[] = "touch-calibration";
 #endif
 
 }  // namespace switches