4406 Fix order-dependant platform interface tests (cla: yes, waiting for tree to go green, p: file_selector, p: google_maps_flutter, p: google_sign_in, p: url_launcher, p: video_player, p: quick_actions)

p: video_player - 17 pull request(s)

2878 [video_player] VTT Support (cla: yes, waiting for tree to go green, p: video_player)

3216 [multiple] Java 8 target for all plugins with -Werror compiler arg (cla: yes, waiting for tree to go green, p: android_alarm_manager, p: android_intent, p: camera, p: path_provider, p: video_player, p: connectivity, platform-android)

3374 [video_player] bugfix caption still showing when text is empty (cla: yes, waiting for tree to go green, p: video_player, last mile)