[battery-status-tests] Update test preconditions for Battery Status API (#1609)

• From: kangxu <web-platform-tests-notifications@w3.org>
• Date: Thu, 05 Feb 2015 06:39:00 GMT
• To: public-web-platform-tests-notifications@w3.org
• Message-Id: <<web-platform-tests_issue_1609@w3.org>>

- Add preconditions for user to indicate that the test need to
  wait for battery level change

View on GitHub: https://github.com/w3c/web-platform-tests/pull/1609

Received on Thursday, 5 February 2015 06:39:07 UTC