chromeos: Add NoteTakingHelper class.

chrome/browser/chromeos/note_taking_app_utils.h

-// Copyright 2016 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_NOTE_TAKING_APP_UTILS_H_
-#define CHROME_BROWSER_CHROMEOS_NOTE_TAKING_APP_UTILS_H_
-
-class Profile;
-
-namespace base {
-class FilePath;
-}  // namespace base
-
-namespace chromeos {
-
-// Returns true if an app that can be used to take notes is available.
-bool IsNoteTakingAppAvailable(Profile* profile);
-
-// Launches the note-taking app to create a new note, optionally additionally
-// passing a file (|path| may be empty). IsNoteTakingAppAvailable() must be
-// called first.
-void LaunchNoteTakingAppForNewNote(Profile* profile,
-                                   const base::FilePath& path);
-
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_CHROMEOS_NOTE_TAKING_APP_UTILS_H_