Change empty notification center and settings dialog text.

Empty center text changed to:
 - Nothing to see here, move along.
Settings dialog label changed to:
 - Allow notifications from the following:

BUG=NONE
R=dharcourt@chromium.org, sky@chromium.org

Review URL: https://codereview.chromium.org/14822003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@198192 0039d316-1c4b-4281-b951-d872f2087c98

ui/base/strings/ui_strings.grd

@@ -441,7 +441,7 @@ need to be translated for each locale.-->
         Settings
       </message>
       <message name="IDS_MESSAGE_CENTER_SETTINGS_DIALOG_DESCRIPTION" desc="The label to describe the settings dialog.">
-        Manage notification permissions for apps, extensions and websites.
+        Allow notifications from the following:
       </message>
       <message name="IDS_MESSAGE_CENTER_SETTINGS" desc="The menu entry or button for visiting the appropriate settings page.">
         Settings...
@@ -450,7 +450,7 @@ need to be translated for each locale.-->
         Clear All
       </message>
       <message name="IDS_MESSAGE_CENTER_NO_MESSAGES" desc="The message displayed in the message center when there are no notifications.">
-        You have no notifications. Relax!
+        Nothing to see here, move along.
       </message>
       <message name="IDS_MESSAGE_CENTER_QUIET_MODE" desc="The button label for quiet mode.">
         Quiet mode