Support: Project files for building GN

Change-Id: I74e8f59c9ae0994c00070533b7643008e1cd3546
Merge branch 'cm' into HEAD

Conflicts:
	v4/v4.iml
	v7/appcompat/appcompat.iml
	v7/mediarouter/mediarouter.iml

Change-Id: Ie5fa1fa6e46210f0d4ba14848a920004c8fc6909