Fix the double-tap to click gesture in touch accessibility mode.

chrome/browser/chromeos/accessibility/accessibility_manager.cc

 // Copyright (c) 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 "chrome/browser/chromeos/accessibility/accessibility_manager.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 #include <utility>
 
 #include "ash/audio/sounds.h"
 #include "ash/autoclick/autoclick_controller.h"
 #include "ash/high_contrast/high_contrast_controller.h"
 #include "ash/metrics/user_metrics_recorder.h"
+#include "ash/root_window_controller.h"
 #include "ash/session/session_state_delegate.h"
 #include "ash/shelf/shelf.h"
 #include "ash/shelf/shelf_layout_manager.h"
 #include "ash/shell.h"
 #include "ash/sticky_keys/sticky_keys_controller.h"
 #include "ash/system/tray/system_tray_notifier.h"
 #include "base/callback.h"
 #include "base/callback_helpers.h"
 #include "base/command_line.h"
 #include "base/macros.h"
@@ skipping 762 matching lines @@
   event_args->AppendString(ui::ToString(gesture));
   std::unique_ptr<extensions::Event> event(new extensions::Event(
       extensions::events::ACCESSIBILITY_PRIVATE_ON_ACCESSIBILITY_GESTURE,
       extensions::api::accessibility_private::OnAccessibilityGesture::
           kEventName,
       std::move(event_args)));
   event_router->DispatchEventWithLazyListener(
       extension_misc::kChromeVoxExtensionId, std::move(event));
 }
 
+void AccessibilityManager::SetTouchAccessibilityAnchorPoint(
+    const gfx::Point& anchor_point) {
+  ash::RootWindowController* root_window_controller =
+      ash::RootWindowController::ForTargetRootWindow();
+  root_window_controller->SetTouchAccessibilityAnchorPoint(anchor_point);
+}
+
 bool AccessibilityManager::IsHighContrastEnabled() {
   return high_contrast_enabled_;
 }
 
 void AccessibilityManager::EnableAutoclick(bool enabled) {
   if (!profile_)
     return;
 
   PrefService* pref_service = profile_->GetPrefs();
   pref_service->SetBoolean(prefs::kAccessibilityAutoclickEnabled, enabled);
@@ skipping 710 matching lines @@
     content::BrowserContext* context) {
   keyboard_listener_extension_id_ = id;
 
   extensions::ExtensionRegistry* registry =
       extensions::ExtensionRegistry::Get(context);
   if (!extension_registry_observer_.IsObserving(registry) && !id.empty())
     extension_registry_observer_.Add(registry);
 }
 
 }  // namespace chromeos