Make touch accessibility gestures work with ChromeVox Next

ash/ash_touch_exploration_manager_chromeos.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 "ash/ash_touch_exploration_manager_chromeos.h"
 
 #include "ash/accessibility_delegate.h"
 #include "ash/audio/sounds.h"
 #include "ash/root_window_controller.h"
 #include "ash/shell.h"
@@ skipping 66 matching lines @@
 void AshTouchExplorationManager::PlayExitScreenEarcon() {
   Shell::GetInstance()->accessibility_delegate()->PlayEarcon(
       chromeos::SOUND_EXIT_SCREEN);
 }
 
 void AshTouchExplorationManager::PlayEnterScreenEarcon() {
   Shell::GetInstance()->accessibility_delegate()->PlayEarcon(
       chromeos::SOUND_ENTER_SCREEN);
 }
 
+void AshTouchExplorationManager::HandleAccessibilityGesture(
+    ui::AXGesture gesture) {
+  Shell::GetInstance()->accessibility_delegate()->HandleAccessibilityGesture(
+      gesture);
+}
+
 void AshTouchExplorationManager::OnWindowActivated(
     aura::client::ActivationChangeObserver::ActivationReason reason,
     aura::Window* gained_active,
     aura::Window* lost_active) {
   UpdateTouchExplorationState();
 }
 
 void AshTouchExplorationManager::UpdateTouchExplorationState() {
   // Comes from components/exo/shell_surface.cc.
   const char kExoShellSurfaceWindowName[] = "ExoShellSurface";
@@ skipping 15 matching lines @@
     touch_exploration_controller_.reset();
   }
 }
 
 bool AshTouchExplorationManager::VolumeAdjustSoundEnabled() {
   return !base::CommandLine::ForCurrentProcess()->HasSwitch(
       chromeos::switches::kDisableVolumeAdjustSound);
 }
 
 }  // namespace ash