Bug 1115148 - Skip test_WaitingOnMissingData.html on Android 2.3 due to high intermittent failure rate.
Bug 1091965 - Skip test_mixingRules.html on Android 2.3 due to high intermittent failure rate. a=test-only

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extra : amend_source : 01897d0116b2325a97a22faf2ea4caafc8a1b53d