Fixes menu controller destruction sequence in a unit test
Fixes menu controller destruction sequence in a unit test

Since we manipulate pending state in a menu controller we need to reset it before the menu controller goes away. This became broken in https://codereview.chromium.org/1129203003/ and only affects the unit tests added in that CL.

BUG=493321
TEST=MenuControllerTest.NextSelectedItem

Review URL: https://codereview.chromium.org/1153193012

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#332282}

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