Improve clarity of Physical Web opt-in notification

chrome/android/java/strings/android_chrome_strings.grd

Index: chrome/android/java/strings/android_chrome_strings.grd
diff --git a/chrome/android/java/strings/android_chrome_strings.grd b/chrome/android/java/strings/android_chrome_strings.grd
index 10299ad5f899bfa427d215321e8912899f2f0af7..633fd77e582d0c81baf6ce95518483818950a33e 100644
--- a/chrome/android/java/strings/android_chrome_strings.grd
+++ b/chrome/android/java/strings/android_chrome_strings.grd
@@ -2313,7 +2313,7 @@ You must have Bluetooth and Location turned on in order to use the Physical Web.
 
 Chrome will scan for nearby pages when your device is unlocked. These pages will go through a Google service to improve the quality of page results.
 
-You can control Physical Web settings in Chrome privacy settings.
+You can control the Physical Web in Chrome privacy settings.
       </message>
       <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.">
         The Physical Web
@@ -2321,8 +2321,11 @@ You can control Physical Web settings in Chrome privacy settings.
       <message name="IDS_PHYSICAL_WEB_NOTIFICATION_TITLE" desc="The message displayed in a notification when there are nearby URLs.">
         Physical Web pages nearby
       </message>
-      <message name="IDS_PHYSICAL_WEB_OPTIN_NOTIFICATION_TITLE" desc="A notification message inviting the user to opt-in to the Physical Web.">
-        Turn on the Physical Web?
+      <message name="IDS_PHYSICAL_WEB_OPTIN_NOTIFICATION_TITLE" desc="The first line in a notification message inviting the user to opt-in to the Physical Web.">
+        Physical Web pages are nearby
+      </message>
+      <message name="IDS_PHYSICAL_WEB_OPTIN_NOTIFICATION_TEXT" desc="The second line in a notification message inviting the user to opt-in to the Physical Web.">

[newt (away), 2016/02/03 21:57:28]

I'm not sure this description give enough context for translators to understand
the string. In particular, translators probably won't understand what "them"
refers to.

[mattreynolds, 2016/02/03 22:40:55]

Done.

+        Use Chrome to browse them
       </message>
       <message name="IDS_PHYSICAL_WEB_EMPTY_LIST" desc="The message displayed in place of a list of nearby URLs when there are no URLs to display.">
         No nearby Physical Web pages found