[Android][WebSignin] Update subtitle string in bottom sheet

This CL updates the subtitle string in the web sign-in bottom sheet.

Screenshot: https://crbug.com/1133279#c1
Bug: 1133279
Change-Id: I0a5a914747065980610baf08266499dede0b7841
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2437952Reviewed-by: Boris Sazonov <bsazonov@chromium.org>
Commit-Queue: Alice Wang <aliceywang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#811771}

chrome/browser/ui/android/strings/android_chrome_strings.grd

@@ -2506,7 +2506,7 @@ In Incognito, your activity might still be visible to websites that you visit, y
         Choose an account
       </message>
       <message name="IDS_SIGNIN_ACCOUNT_PICKER_BOTTOM_SHEET_SUBTITLE" desc="The subtitle for the account picker bottom sheet that tells the user what happens if the button 'Continue as John Doe' is clicked">
-        Sign in to this site, your Google Account, and Chrome. You may turn on sync later.
+        Sign in to this site and Chrome with your Google Account. You can turn on sync later.
       </message>
       <message name="IDS_SIGNIN_ACCOUNT_PICKER_BOTTOM_SHEET_SIGNIN_TITLE" desc="The title of the account picker bottom sheet tells that the user is in the process of signing in with their Google Account">
         Signing in...

chrome/browser/ui/android/strings/android_chrome_strings_grd/IDS_SIGNIN_ACCOUNT_PICKER_BOTTOM_SHEET_SUBTITLE.png.sha1

-0caa23ad3d78d11125c4174724f1314c40a15340
+c6cc9bd05afe686d39f96e1fd69fc8ec53f07a52
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