This file is indexed.

/usr/lib/thunderbird-addons/extensions/{a62ef8ec-5fdc-40c2-873c-223b8a6925cc}/chrome/gdata-provider-en-US/locale/en-US/gdata.dtd is in xul-ext-gdata-provider 1:52.7.0+build1-0ubuntu1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
<!-- This Source Code Form is subject to the terms of the Mozilla Public
   - License, v. 2.0. If a copy of the MPL was not distributed with this
   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->

<!ENTITY gdata-provider.label "Google Calendar">

<!ENTITY gdata.privacy.default.label "Google Default">
<!ENTITY gdata.privacy.default.accesskey "D">

<!ENTITY gdata.migration.title "Migrate read-only calendars">
<!ENTITY gdata.migration.description "The Provider for Google Calendar has detected that you have existing calendars that are only capable of accessing Google Calendar in read-only mode. If you would like to upgrade any of these calendars, please select them below">
<!ENTITY gdata.migration.upgrade.label "Upgrade">
<!ENTITY gdata.migration.upgrade.accesskey "U">
<!ENTITY gdata.migration.showagain.label "Always check ">

<!ENTITY gdata.reminder.default "Default Reminder">
<!ENTITY gdata.reminder.action.sms.label "Send a Text Message">

<!ENTITY gdata.wizard.session.description "Please pick an existing session or enter your email address to create a new session. You only need one session per account.">
<!ENTITY gdata.wizard.calendars.description "Please select the calendars and task lists you would like to subscribe to.">

<!ENTITY gdata.wizard.nextstep.description "Please advance to the next step to set up your calendars.">