Fix credential provider strings based on UX feedback.

Bug: 899239
Change-Id: I17dea00048fb3224dcfb17381ba6a1d5db689793
Reviewed-on: https://chromium-review.googlesource.com/c/1301839
Commit-Queue: Roger Tawa <rogerta@chromium.org>
Reviewed-by: Owen Min <zmin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#603170}

chrome/credential_provider/gaiacp/gaia_resources.grd

@@ -131,16 +131,16 @@
         Google Credential Provider
       </message>
       <message name="IDS_INVALID_UI_RESPONSE" desc="">
-        Signing in to your Google account failed, please try again.  Make sure the computer has a valid internet connection.  If the error persists, please report to Google.
+        Signing in to your Google Account failed. Make sure the computer has an internet connection, then try again.
       </message>
       <message name="IDS_CANT_CREATE_USER" desc="">
         A user could not be created.
       </message>
       <message name="IDS_INTERNAL_ERROR" desc="">
-        An internal error occurred.  If the error persists. please report to Google.
+        An internal error occurred.
       </message>
       <message name="IDS_EMAIL_MISMATCH" desc="">
-         Logon with this Google Account is not permitted.
+         Signing in with this Google Account is not allowed. Try a different account.
       </message>
       <message name="IDS_GAIA_ACCOUNT_FULLNAME" desc="">
         Google Credential Provider Helper
@@ -149,19 +149,19 @@
         Used to run Google Credential Provider sign in page.
       </message>
       <message name="IDS_AUTH_FID_DESCRIPTION" desc="">
-        Logon using your Google Account.
+        Sign in using your Google Account.
       </message>
       <message name="IDS_AUTH_FID_PROVIDER_LABEL" desc="">
         Google Account
       </message>
       <message name="IDS_REAUTH_FID_DESCRIPTION" desc="">
-        Logon using your updated Google Account password.
+        Sign in using your updated Google Account password.
       </message>
       <message name="IDS_REAUTH_FID_PROVIDER_LABEL" desc="">
         Update password
       </message>
       <message name="IDS_ERROR_DIALOG_TITLE" desc="">
-        Google Account Logon
+        Google Account sign-in
       </message>
       <message name="IDS_USER_ACCOUNT_COMMENT" desc="">
         Google user