Revert "Revert "Remove AidlImport::GetDocument""

This reverts commit c819f23804c191174c8d3f70b3e592ebd210a876.

The original commit only needed to be reverted in order to revert a
dependency.

Change-Id: I7a7d08e8bfeaa97dac1122a202544884b10254b8
3 files changed