This is the cherry pick merge for the M73 branch which was approved here: http://crbug.com/927210

[Autofill Assistant] Changed onboarding message according to requirements by legal.

before: https://screenshot.googleplex.com/T2YQ1JAP0tf.png
after: https://screenshot.googleplex.com/uKLQ1UV365h.png

Bug: 806868
Change-Id: Idf003094176f46b8614ea1784aec0245ef0837de
Reviewed-on: https://chromium-review.googlesource.com/c/1442195
Auto-Submit: Clemens Arbesser <arbesser@google.com>
Reviewed-by: Stephane Zermatten <szermatt@chromium.org>
Commit-Queue: Stephane Zermatten <szermatt@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#626987}(cherry picked from commit c3385bf)
Reviewed-on: https://chromium-review.googlesource.com/c/1449591
Cr-Commit-Position: refs/branch-heads/3683@{#111}
Cr-Branched-From: e510299-refs/heads/master@{#625896}

Author: Clemens Arbesser

chrome/android/java/strings/android_chrome_strings.grd

@@ -4028,8 +4028,8 @@ However, you aren’t invisible. Going private doesn’t hide your browsing from
       <message name="IDS_PREFS_AUTOFILL_ASSISTANT_SWITCH" desc="Title for the switch toggling whether Autofill Assistant is enabled. [CHAR-LIMIT=32]">
         Assistant Triggered Checkout
       </message>
-      <message name="IDS_AUTOFILL_ASSISTANT_GOOGLE_TERMS_DESCRIPTION" desc="Message linking to the Google terms and conditions for Fast Checkout.">
-        By continuing, you agree that Chrome will send data from Chrome Autofill, the site’s URL and its content to Google to provide this service.\n\nVisit Chrome settings to turn off Google Assistant in Chrome and Chrome Autofill.  <ph name="BEGIN_LINK">&lt;link&gt;</ph>Learn more<ph name="END_LINK">&lt;/link&gt;</ph>
+      <message name="IDS_AUTOFILL_ASSISTANT_GOOGLE_TERMS_DESCRIPTION" desc="Message linking to the Google terms and conditions for Google Assistant in Chrome.">
+        By continuing, you agree that Chrome will send data from Chrome Autofill, the site’s URL and its content to Google to provide this service. \n\nYou also agree that Chrome will send personal data you selected to the website via Chrome Autofill. Visit Chrome settings to turn off Google Assistant in Chrome and Chrome Autofill.  <ph name="BEGIN_LINK">&lt;link&gt;</ph>Learn more<ph name="END_LINK">&lt;/link&gt;</ph>
       </message>
       <message name="IDS_AUTOFILL_ASSISTANT_GOOGLE_TERMS_URL" desc="URL for Google Autofill Assistant Terms of Service" translateable="false">
         http://support.google.com/assistant?p=fast_checkout