Fire accessibilityPrivate events on two-finger hold gesture.

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/root_window_controller.h"
 #include "ash/shared/app_types.h"
 #include "ash/shell.h"
@@ skipping 86 matching lines @@
 }
 
 void AshTouchExplorationManager::OnDisplayMetricsChanged(
     const display::Display& display,
     uint32_t changed_metrics) {
   if (root_window_controller_->GetWindow()->GetDisplayNearestWindow().id() ==
       display.id())
     UpdateTouchExplorationState();
 }
 
+void AshTouchExplorationManager::OnTwoFingerTouchStart() {
+  AccessibilityDelegate* delegate = Shell::Get()->accessibility_delegate();
+  delegate->OnTwoFingerTouchStart();
+}
+
+void AshTouchExplorationManager::OnTwoFingerTouchStop() {
+  AccessibilityDelegate* delegate = Shell::Get()->accessibility_delegate();
+  delegate->OnTwoFingerTouchStart();
+}
+
 void AshTouchExplorationManager::PlaySpokenFeedbackToggleCountdown(
     int tick_count) {
   AccessibilityDelegate* delegate = Shell::Get()->accessibility_delegate();
   if (delegate->ShouldToggleSpokenFeedbackViaTouch())
     delegate->PlaySpokenFeedbackToggleCountdown(tick_count);
 }
 
 void AshTouchExplorationManager::ToggleSpokenFeedback() {
   AccessibilityDelegate* delegate = Shell::Get()->accessibility_delegate();
   if (delegate->ShouldToggleSpokenFeedbackViaTouch())
@@ skipping 53 matching lines @@
     touch_exploration_controller_.reset();
   }
 }
 
 bool AshTouchExplorationManager::VolumeAdjustSoundEnabled() {
   return !base::CommandLine::ForCurrentProcess()->HasSwitch(
       chromeos::switches::kDisableVolumeAdjustSound);
 }
 
 }  // namespace ash