am 5d1b9731: am 29eafdea: AI 149251: Add 1.x Icon Guidelines doc and template pack.   BUG=1790234

Merge commit '5d1b97315763b8a8882b428885342e0cd2817050'

* commit '5d1b97315763b8a8882b428885342e0cd2817050':
  AI 149251: Add 1.x Icon Guidelines doc and template pack.