[Files.app] Fix the licence error of audio_player_scripts.js

This patch fixes the build failure of the 'check_licenses' test in 'Android Builder (dbg)'.

Major changes:
- Modify the year in the copyright string in audio_player_scripts.js
- Put audio_player_scripts.js into the whitelist

BUG=none
TEST=manually run android_webview/tools/webview_licenses.py scan
TBR=boliu@chromium.org, yoshiki@chromium.org

Review URL: https://codereview.chromium.org/150143002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@247896 0039d316-1c4b-4281-b951-d872f2087c98

android_webview/tools/third_party_files_whitelist.txt

@@ -41,6 +41,8 @@ chrome/browser/resources/file_manager/foreground/js/main_scripts.js
 # String 'copyright' used in code.
 chrome/browser/resources/file_manager/foreground/js/media/mediaplayer_scripts.js
 # String 'copyright' used in code.
+chrome/browser/resources/file_manager/audio_player/js/audio_player_scripts.js
+# String 'copyright' used in code.
 chrome/browser/resources/file_manager/foreground/js/media/video_player_scripts.js
 # String 'copyright' used in code.
 chrome/common/importer/firefox_importer_utils.cc

chrome/browser/resources/file_manager/audio_player/js/audio_player_scripts.js

-// Copyright 2013 The Chromium Authors. All rights reserved.
+// 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.