ash: Clean up shelf GetAlignment() and IsHorizontalAlignment() calls

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>
@@ skipping 66 matching lines @@
 #include "extensions/common/extension_resource.h"
 #include "extensions/common/host_id.h"
 #include "mash/public/interfaces/launchable.mojom.h"
 #include "media/audio/sounds/sounds_manager.h"
 #include "media/base/media_switches.h"
 #include "services/service_manager/public/cpp/connector.h"
 #include "ui/base/ime/chromeos/input_method_manager.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/keyboard/keyboard_controller.h"
 #include "ui/keyboard/keyboard_util.h"
+#include "ui/views/widget/widget_observer.h"
 
 using content::BrowserThread;
 using extensions::api::braille_display_private::BrailleController;
 using extensions::api::braille_display_private::DisplayState;
 using extensions::api::braille_display_private::KeyEvent;
 using extensions::api::braille_display_private::StubBrailleController;
 
 namespace chromeos {
 
 namespace {
@@ skipping 1281 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