Backed out changeset 57e490053263 (bug 1018928) for causing the intermittent test failures in bug 1032991
Bug 979207 - Disable browser_968447_bookmarks_toolbar_items_in_panel.js on Linux for intermittent failures
Bug 996465 - Disable test_fragment_play.html on B2G & Android for intermittent failures
Bug 987493 - Disable browser_state_notifications.js for intermittent failures
Bug 1019131 - Disable 664127-1.xul on Android for intermittent failures
Bug 1032137 - Disable browser_UITour_panel_close_annotation.js on Windows for intermittent test failures
Bug 1023564 & bug 981153 - Disable test_seek.html for being a persistant source of intermittent test failures
Bug 1016310 - Disable browser_console_optimized_out_vars.js for intermittent failures
Bug 941575 - Disable browser_fullscreen-window-open.js on Linux for intermittent failures