ionic-cli: platforrms/android not added after adding crosswalk, ionic run android fails

I did the following:

1. ionic start my_app
2. cd my_app
3. ionic browser add crosswalk

I see the following after that:

Adding crosswalk browser Downloaded cordova-crosswalk-engine Downloaded Cordova Android for Crosswalk Downloading: https://download.01.org/crosswalk/releases/crosswalk/android/stable/8.37.189.14/arm/crosswalk-webview-8.37.189.14-arm.zip Downloading: https://download.01.org/crosswalk/releases/crosswalk/android/stable/8.37.189.14/x86/crosswalk-webview-8.37.189.14-x86.zip [=============================] 100% 0.0s [=============================] 100% 0.0s Downloaded Crosswalk webviews Fetching Android SDK API 19.1.0 Downloaded Android runtime (API 19) Removed old Cordova Android platform Added Cordova Android 4.0 Added Crosswalk Webview Engine Ionic Browser Add completed for Crosswalk

1. After this when I do ionic run android, I see: No platforms added to this project. Please use cordova platform add <platform>.

Am I expected to manually add the android platform?