ash/system/DEPS - chromium/src - Git at Google

 include_rules = [
   # NOTE: Use WmShelf in //ash/common/shelf for all external shelf access.
   # See http://crbug.com/615502
   "-ash/shelf",
   "+components/prefs",
   "+components/signin/core/account_id",
 ]
	include_rules = [
	# NOTE: Use WmShelf in //ash/common/shelf for all external shelf access.
	# See http://crbug.com/615502
	"-ash/shelf",
	"+components/prefs",
	"+components/signin/core/account_id",
	]