Update oauth strings for extension install UI

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index 83817a0856bd89a071dfa7db054b906c2addb9d7..dd8598cb7c3d9da935e74700e32a33777426cc51 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -4386,8 +4386,14 @@ Update checks have repeatedly failed for the extension "<ph name="EXTENSION_NAME
       <message name="IDS_EXTENSION_PROMPT_STORE_LINK" desc="Anchor text for link to Chrome Web Store in app or extension installation dialog">
         View details
       </message>
-      <message name="IDS_EXTENSION_PROMPT_SCOPES_HEADING" desc="Heading above the OAuth2 scopes permissions.">
-        The app wants these scopes:
+      <message name="IDS_EXTENSION_PROMPT_OAUTH_HEADER" desc="">
+        On your <ph name="ACCOUNT_EMAIL">$1<ex>user@example.com</ex></ph> account, it can:
+      </message>
+      <message name="IDS_EXTENSION_PROMPT_OAUTH_REENABLE_HEADER" desc="">
+        On your <ph name="ACCOUNT_EMAIL">$1<ex>user@example.com</ex></ph> account, it can now:
+      </message>
+      <message name="IDS_EXTENSION_PROMPT_OAUTH_PERMISSIONS_HEADER" desc="">
+        On your <ph name="ACCOUNT_EMAIL">$1<ex>user@example.com</ex></ph> account, it could:
       </message>
 
       <if expr="pp_ifdef('android')">