Google is not really known for keeping consistency across their product and we can now see it with the Gmail mobile app for the Android ICS platform.
Google already uses the labs branding for experimental features on their web and mobile apps.
And they are offering similar features on the Gmail app on Android ICS devices. But they are calling them Experiments.
Two experiments have been added:
Enable full text search: This would get the phone to index all the content in your mails to make them accessible from the Google search feature.
Enable drag and drop contact chip: You can drag and drop contacts between to/cc/bcc fields which composing emails.