Bug 1056187 - Add playout delay to RtspTrackBuffer. r=bechen
Bug 1066515 - Part 1: Set selection range directly when replacing within current text node. r=yxl
Bug 1066515 - Part 2: Add replaceSurroundingText() test cases for content editable element. r=yxl
Bug 1066515 - Part 3: Finalize active inputmethod when mochitest finish. r=yxl
Bug 1073853 - Do Symbol-related tests only if defined. r=jorendorff