
Small update to chrome extensions extern
Contributed by amattie
Fixes issue 876
https://code.google.com/p/closure-compiler/issues/detail?id=876

R=ewa
DELTA=23 (12 added, 2 deleted, 9 changed)


Revision created by MOE tool push_codebase.
MOE_MIGRATION=6056


git-svn-id: 818616af560c21f974e3119d89e3310384da871a@2432 b0f006be-c8cd-11de-a2e8-8d36a3108c74

weitzj/closure-compiler,weitzj/closure-compiler