RELNOTES: Report tearDownPage() errors to the window.
RELNOTES: Report tearDownPage() errors to the window.

A failure here is quite mysterious: the individual tests pass but then the overall test processing hangs, probably because we are in a promise-like queue and the exception leaves the queue.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=265918116

google/closure-library,lucidsoftware/closure-library,lucidsoftware/closure-library,lucidsoftware/closure-library,google/closure-library,google/closure-library,google/closure-library,lucidsoftware/closure-library,google/closure-library