Modify Physical Web Nearby URLs list to resemble search results

chrome/android/java/strings/android_chrome_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!-- android_chrome_strings.grd contains strings for Chrome for Android.
 
 FAQ:
   - How do I add, change, or remove a string?
       Just update this file.
   - Translations will happen automatically??
       Yes, indeed. Just add your string before the branch point and
       make the description good.
@@ skipping 2272 matching lines @@
 
       <!-- Physical Web strings -->
       <message name="IDS_PHYSICAL_WEB_LIST_URLS_ACTIVITY_TITLE" desc="The title for a dialog that shows a list of URLs broadcasted from nearby devices.">
         Nearby URLs
       </message>
       <message name="IDS_PHYSICAL_WEB_NOTIFICATION_TITLE" desc="Description of quantity of discovered URLs nearby.">
         {NUM_URLS, plural,
          =1 {1 URL nearby}
          other {# URLs nearby}}
       </message>
+      <message name="IDS_PHYSICAL_WEB_FAVICON_CONTENT_DESCRIPTION" desc="Content description of the favicon field for a discovered URL.">

[dvh, 2015/10/22 18:19:10]

I'm not sure about adding that string. I think that "android:contentDescription"
is for accessibility and it's useful where there's something that needs to be
described to the user and I think that's not useful to give a generic
description of the favicon to the user with vision disabilities.
I think we can remove that string and the "android:contentDescription" attribute
altogether.

+        favicon for the given URL for this entry
+      </message>
     </messages>
   </release>
 </grit>