[url_launcher, url_launcher_web] Fix API dependencies. (flutter#2984)

[url_launcher, url_launcher_web] Fix API dependencies. (flutter#2984)

[url_launcher, url_launcher_web]Added webOnlyWindowName parameter to …

…launch() (flutter#2979)

[url_launcher, url_launcher_web]Added webOnlyWindowName parameter to …

…launch() (flutter#2979)

[url_launcher_platform_interface] Add webOnlyWindowName parameter to …

…launch() (flutter#2974)

[share] Add sharing file support (android & ios) (flutter#970)


Co-authored-by: Kifah Meeran <[email protected]>
Co-authored-by: Aloïs Deniel <[email protected]>
Co-authored-by: Colin Stewart <[email protected]>

[integration_test] add support to get timeline (flutter#2947)

[battery_platform_interface] Introduce package. (flutter#2975)

[integration_test] Fix channel name for iOS, docs (flutter#2972)

[video_player_platform_interface] fix `setMixIWithOthers` test channel (

flutter#2968)