
Change goog.Timer to look for timer methods on goog.global instead of goog.global['window'].

Using goog.global['window'] throws an exception if the domain is escalated after the window reference is saved. 

R=nicksantos
DELTA=15 (0 added, 0 deleted, 15 changed)


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git-svn-id: 35241bd708fe29f1f6c7a4322d322e99ff93b95e@2418 0b95b8e8-c90f-11de-9d4f-f947ee5921c8

weitzj/closure-library,weitzj/closure-library