Revert of Introduce ash mojo interface for lock screen action handlers

chrome/browser/chromeos/lock_screen_apps/types.h

Index: chrome/browser/chromeos/lock_screen_apps/types.h
diff --git a/chrome/browser/chromeos/lock_screen_apps/types.h b/chrome/browser/chromeos/lock_screen_apps/types.h
new file mode 100644
index 0000000000000000000000000000000000000000..f0cfc4b17a0ab70b3d58819cc76edb3b7617d286
--- /dev/null
+++ b/chrome/browser/chromeos/lock_screen_apps/types.h
@@ -0,0 +1,34 @@
+// Copyright 2017 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.
+
+#ifndef CHROME_BROWSER_CHROMEOS_LOCK_SCREEN_APPS_TYPES_H_
+#define CHROME_BROWSER_CHROMEOS_LOCK_SCREEN_APPS_TYPES_H_
+
+namespace lock_screen_apps {
+
+// App provided actions supported on the lock screen.
+enum class Action {
+  kNewNote,
+};
+
+// State of surrpot for a lock screen action.
+enum class ActionState {
+  // There is no app registered to handle the action.
+  kNotSupported,
+  // There is an app registered to handle the action, but the action cannot be
+  // handled at the moment, e.g. due to the user session not being locked.
+  kNotAvailable,
+  // There is an app registered to handle the action.
+  kAvailable,
+  // A handler for the action is being launched.
+  kLaunching,
+  // The action is being handled.
+  kActive,
+  // The action is being handled, but the handler window has been hidden.
+  kHidden,
+};
+
+}  // namespace lock_screen_apps
+
+#endif  // CHROME_BROWSER_CHROMEOS_LOCK_SCREEN_APPS_TYPES_H_