Assist translation of avatar-button strings

* Adds meaning to "Paused" and "Error" short strings.
* Takes context screenshots for both.
* Moves screenshot folder to profile_strings_grdp so it gets detected
  by the upload script.

Bug: chromium:863978
Change-Id: Ie62f52bbb67c33188658d170b9a12cb6d565d1aa
Reviewed-on: https://chromium-review.googlesource.com/1141355Reviewed-by: Greg Thompson <grt@chromium.org>
Commit-Queue: Peter Boström <pbos@chromium.org>
Cr-Commit-Position: refs/heads/master@{#576058}

chrome/app/profiles_strings.grdp

@@ -20,13 +20,13 @@
   <message name="IDS_AVATAR_BUTTON_INCOGNITO_TOOLTIP" desc="Tooltip for the inactive avatar button when the user is in incognito mode.">
     You're incognito
   </message>
-  <message name="IDS_AVATAR_BUTTON_SYNC_ERROR" desc="Short label for the avatar button when there are sync errors for the current profile.">
+  <message name="IDS_AVATAR_BUTTON_SYNC_ERROR" desc="Short label for the avatar button when there are sync errors for the current profile." meaning="An error has occurred during sync">
     Error
   </message>
   <message name="IDS_AVATAR_BUTTON_SYNC_ERROR_TOOLTIP" desc="Tooltip for the avatar button when there are sync errors for the current profile.">
     <ph name="PROFILE_NAME">$1<ex>User</ex></ph>: Sync isn't working
   </message>
-  <message name="IDS_AVATAR_BUTTON_SYNC_PAUSED" desc="Short label for the avatar button when sync is paused for the current profile.">
+  <message name="IDS_AVATAR_BUTTON_SYNC_PAUSED" desc="Short label for the avatar button when sync is paused for the current profile." meaning="Sync is paused">
     Paused
   </message>
   <message name="IDS_AVATAR_BUTTON_SYNC_PAUSED_TOOLTIP" desc="Tooltip for the avatar button when sync is paused for the current profile.">

chrome/app/profiles_strings_grdp/IDS_AVATAR_BUTTON_SYNC_ERROR.png.sha1

+53d014b5779f098f1394c65ba505af104bc3f59a
\ No newline at end of file

chrome/app/profiles_strings_grdp/IDS_AVATAR_BUTTON_SYNC_PAUSED.png.sha1

+463bd01935c7af0ee39c736d3add7cdc4f4b06a9
\ No newline at end of file