2915 [e2e] Update code onwer. (cla: yes)

2917 [e2e] revert performance tracker utilities (waiting for test harness)

2918 Rename e2e -> integration_test (cla: yes)

2921 Add README instructions for enablePendingPurchases (cla: yes)

2922 [video_player] Set audio mix options (cla: yes)

2923 [device_info] Changed directory of device_info (cla: yes, waiting for test harness)

2924 [google_maps_flutter] Pin GoogleMaps cocoapod dep to last good known version (cla: yes)

2927 [video_player_platform_interface] Add interface changes for audio mix mode (cla: yes)

2928 Fix unguarded availability in Camera plugin (cla: yes)