Makes so many things simpler and robust.
Bug: T198935
Change-Id: Ia836f8f497cae8599f85cf86a7f6b299cd012e81
Depends-On: Iff63da0d215585cfcf083e7f7ec8ed45d5b77301
All files containing more than one PHP class were split into
multiple files.
extension.json was updated to match new class locations.
Bug: T177809
Change-Id: I4e7d8f02164c3048c41c4c9fbe4be18a99e7abaa