Add a signature to TextSelection and TextClassification
A signature is a tag that a TextClassifier may use to identify an
object it returned for a given query. This is useful for logging
purposes.
This cl also removes:
- TextClassification.getLogType() and related logging.
This is already covered by selection event logging.
- TextClassification.getVersionInfo(),
TextSelection.getVersionInfo()/getSourceClassifier().
These are now featured in the signature.
TODO: Write a container class that generates and parses signatures.
Bug:
69791269
Test: bit FrameworksCoreTests:android.view.textclassifier.TextClassificationManagerTest
Test: bit FrameworksCoreTests:android.widget.TextViewActivityTest
Test: bit CtsWidgetTestCases:android.widget.cts.TextViewTest
Change-Id: I294f7e4d16c98c6512d56d08d488b204c1f91d47