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Because the sizemodechange event is not synchronous on all platforms, we additionally need to await the window's dimensions to change. However, if the window manager does not have a notion of a maximised state, this operation too could time out. However, it is believed that the additional wait will allow for the window to transition to the required state in this scenario. MozReview-Commit-ID: KeHJMKSJfjQ
Common testing tools for mozilla codebase projects, test suite definitions for automated test runs, tests that don't fit anywhere else, and other fun stuff