Improve clarity of Physical Web onboarding interstitial message

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 2347 matching lines @@
       </message>
       <message name="IDS_PHYSICAL_WEB_PREF_DESCRIPTION" desc="Description for Physical Web preference">
         Discover web pages sent by nearby objects. Chrome gathers web pages associated with objects around you, sends them anonymously to a Google service to find the ones most useful to you, then displays them.
 
 You must have Bluetooth and Location turned on in order to use the Physical Web.
       </message>
       <message name="IDS_PHYSICAL_WEB_OPTIN_TITLE" desc="The title for a dialog inviting the user to opt-in to the Physical Web.">
         Chrome + Physical Web
       </message>
       <message name="IDS_PHYSICAL_WEB_OPTIN_DESCRIPTION" desc="Description of the Physical Web displayed in the opt-in dialog">
-        Chrome can now find and show you nearby web pages using Bluetooth.
+        Devices nearby you are broadcasting web pages over Bluetooth. Chrome will scan for pages and display them when you wake up your device. These pages will go through a Google service to improve the quality of page results.
 
-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 the Physical Web in Chrome privacy settings.
+You can control the Physical Web in Chrome 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
       </message>
       <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="The first line in a notification message informing the user there are nearby devices broadcasting URLs and Chrome can be used to browse the list of URLs.">
         Web pages are nearby
       </message>
@@ skipping 19 matching lines @@
     <!-- Password Manager strings -->
       <message name="IDS_UPDATE_PASSWORD" desc="A message shown to users to allow updating a saved password for a site, shown in an infobar that appears after the user uses a different password to sign in to the site or uses a password change form.">
         Do you want <ph name="PASSWORD_MANAGER_BRAND">^1<ex>Google Chrome</ex></ph> to update your password for this site?
       </message>
       <message name="IDS_UPDATE_PASSWORD_FOR_ACCOUNT" desc="A message shown to users to allow updating a saved password for a site, where user has multiple credentials saved, shown in an infobar that appears after user uses new password to sign in to the site or uses a password change form.">
         Do you want <ph name="PASSWORD_MANAGER_BRAND">^1<ex>Google Chrome</ex></ph> to update the password for <ph name="USERNAME">^2<ex>don.john.lemon@example.com</ex></ph> for this site?
       </message>
     </messages>
   </release>
 </grit>