Mechanical refactoring to new typed XML classes.

Related changes are introducing new TypedXmlSerializer and
TypedXmlPullParser interfaces which offer efficient access to
primitive attributes.

Bug: 171832118
Test: manual
Exempt-From-Owner-Approval: trivial refactoring
Change-Id: Iae4dca6924cf1badfb9217a725798068eb602a32
64 files changed