
Fix goog.tweak to work on IE

R=agrieve
DELTA=54  (18 added, 9 deleted, 27 changed)


Revision created by MOE tool push_codebase.
MOE_MIGRATION=65


git-svn-id: 35241bd708fe29f1f6c7a4322d322e99ff93b95e@520 0b95b8e8-c90f-11de-9d4f-f947ee5921c8

johan/closure-library,johan/closure-library,johan/closure-library