Added an (optional) session id to Autofill id.

Test: atest FrameworksCoreTests:android.view.autofill.AutofillIdTest \
            FrameworksCoreTests:android.view.contentcapture.ContentCaptureSessionTest \
            FrameworksCoreTests:android.view.contentcapture.ViewNodeTest \
	    CtsContentCaptureServiceTestCases \
            CtsAutoFillServiceTestCases
Bug: 121197119

Change-Id: I7572de182d9bf1c3862997766423bd5742f3ce2a
6 files changed