
Add html5 constraint validation api externs.
MOE re-sync of r1921

R=acleung
DELTA=192  (192 added, 0 deleted, 0 changed)


Revision created by MOE tool push_codebase.
MOE_MIGRATION=4619


git-svn-id: 818616af560c21f974e3119d89e3310384da871a@1923 b0f006be-c8cd-11de-a2e8-8d36a3108c74

bramstein/closure-compiler-inline,dound/google-closure-compiler,h4ck3rm1k3/javascript-closure-compiler-git,h4ck3rm1k3/javascript-closure-compiler-git,bramstein/closure-compiler-inline,dound/google-closure-compiler