UI Changes to support clearing EME/CDM data

chrome/app/settings_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Settings-specific strings (included from generated_resources.grd). -->
 <grit-part>
   <!-- About Page -->
   <if expr="chromeos">
     <message name="IDS_SETTINGS_ABOUT_PAGE_CHECK_FOR_UPDATES" desc="The button label to check for updates and apply (download and install) if found">
       Check for updates
     </message>
     <message name="IDS_SETTINGS_ABOUT_PAGE_CURRENT_CHANNEL_STABLE" desc="The stable label in the message about current channel.">
       stable
@@ skipping 561 matching lines @@
   </message>
   <message name="IDS_SETTINGS_CLEAR_PASSWORDS" desc="Checkbox for deleting Passwords">
     Passwords
   </message>
   <message name="IDS_SETTINGS_CLEAR_FORM_DATA" desc="Checkbox for deleting form data saved for Autofill">
     Autofill form data
   </message>
   <message name="IDS_SETTINGS_CLEAR_HOSTED_APP_DATA" desc="Checkbox for deleting data of hosted apps">
     Hosted app data
   </message>
-  <message name="IDS_SETTINGS_DEAUTHORIZE_CONTENT_LICENSES" desc="Checkbox for deauthorizing content licenses (DRM videos, etc.)">
-    Content licenses
+  <message name="IDS_SETTINGS_CLEAR_MEDIA_LICENSES" desc="Checkbox for deleting media licenses (DRM videos, etc.)">

[xhwang, 2016/06/17 06:24:29]

How about s/DRM videos/premium contents to be consistent?

[jrummell, 2016/06/21 00:13:43]

Done.

+    Media licenses
   </message>
   <message name="IDS_SETTINGS_CLEAR_DATA_HOUR" desc="deletion period combo box: hour. In English this finishes the sentence that starts with 'Obliterate the following items from'.">
     the past hour
   </message>
   <message name="IDS_SETTINGS_CLEAR_DATA_DAY" desc="deletion period combo box: day. In English this finishes the sentence that starts with 'Obliterate the following items from'.">
     the past day
   </message>
   <message name="IDS_SETTINGS_CLEAR_DATA_WEEK" desc="deletion period combo box: week. In English this finishes the sentence that starts with 'Obliterate the following items from'.">
     the past week
   </message>
@@ skipping 952 matching lines @@
       System
     </message>
     <message name="IDS_SETTINGS_SYSTEM_HARDWARE_ACCELERATION_LABEL" desc="Label for the checkbox that forces Chrome to render via hardware acceleration (GPU) when available.">
       Use hardware acceleration when available
     </message>
     <message name="IDS_SETTINGS_SYSTEM_PROXY_SETTINGS_BUTTON" desc="Text for the button that changes a user's network proxy settings.">
       Change proxy settings
     </message>
   </if>
 </grit-part>