am 29eafdea: AI 149251: Add 1.x Icon Guidelines doc and template pack.   BUG=1790234

Merge commit '29eafdea34a5239b25fe82e5cd6debf1a5157c6b' into donut

* commit '29eafdea34a5239b25fe82e5cd6debf1a5157c6b':
  AI 149251: Add 1.x Icon Guidelines doc and template pack.
tree: 378a9717455db680cdd8dcd6c20c24955b34444b
  1. core/
  2. libs/
  3. target/
  4. tools/
  5. buildspec.mk.default
  6. cleanspec.mk
  7. envsetup.sh