s/Block ads from/Block ads on/ in Android settings UI

Bug: b/117813236
Change-Id: I5f4d9753463e66fed0c336fa546ef80805586847
Reviewed-on: https://chromium-review.googlesource.com/c/1287049
Commit-Queue: Charlie Harrison <csharrison@chromium.org>
Reviewed-by: Josh Karlin <jkarlin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#600775}

chrome/android/java/strings/android_chrome_strings.grd

@@ -1053,11 +1053,11 @@ Your Google account may have other forms of browsing history like searches and a
       <message name="IDS_WEBSITE_SETTINGS_CATEGORY_POPUPS_REDIRECTS_BLOCKED" desc="Summary text explaining that sites are blocked from showing popups/redirects and that it is the recommended setting.">
         Block sites from showing pop-ups and redirects (recommended)
       </message>
-      <message name="IDS_WEBSITE_SETTINGS_CATEGORY_ADS_BLOCKED" desc="Summary text explaining that ads are being blocked on some sites.">
-        Block ads from sites that show intrusive or misleading ads
+      <message name="IDS_WEBSITE_SETTINGS_CATEGORY_ADS_BLOCKED" desc="A setting that, if turned on, will block intrusive or misleading ads on sites that have a history of showing such ads.">
+        Block ads on sites that show intrusive or misleading ads
       </message>
       <message name="IDS_WEBSITE_SETTINGS_CATEGORY_ADS_BLOCKED_LIST" desc="Summary text explaining that the Ads permission is set to block ads on some sites. To be shown in the list of permission categories.">
-        Blocked from some sites
+        Blocked on some sites
       </message>
       <message name="IDS_WEBSITE_SETTINGS_PERMISSIONS_ADS_BLOCK" desc="The Blocked string for the ads permission on Site Details">
          Block if site shows intrusive or misleading ads (recommended)