commit 94b8579607c6f1201cea9d6601e88cec897b2ff6
author Arc Wang <arcwang@google.com> Wed Jul 29 15:13:28 2020 +0800
committer Arc Wang <arcwang@google.com> Fri Jul 31 10:06:48 2020 +0800
tree c07d040214bc13999b738add0c384e7664724d39
parent d7b0e0a00e310d63e7958c06f7f4be8f6bac14b0

[Wi-Fi] Check if domain field is not empty when users choose a ca certificate

Domain is required for client to validate server's certificate.
This change disable Save button for a new Wi-Fi network of a
specified CA certificate but empty domain.

Bug: 161378819
Test: make RunSettingsRoboTests ROBOTEST_FILTER=WifiConfigControllerTest
      make RunSettingsRoboTests ROBOTEST_FILTER=WifiConfigController2Test
      manual
      1. Install a certificate.
      2. Add a new Wi-Fi network of EAP method PEAP
      3. Set CA certificate to the certificate installed at 1.
      4. Save button should be disabled.
      5. Input something in domain field.
      6. Save button should be enabled.
Change-Id: I65c8b29ec7a03b21403ddbfc087ce48c2a4a69e4