2651 Remove Gradle hacks and upgrade SDK (cla: yes)

2654 [ios_platform_images] Fix crash when parameter extension is null (cla: yes)

2656 [url_launcher] Open url in same window when browser is in standalone mode. (cla: yes)

2657 Revert “[e2e] Replaces the check for ActivityTestRule” (cla: yes)

2658 [video_player_web] Add a custom analysis_options file to video_player_web. (cla: yes)

2660 [google_sign_in] Make the Delegate non-final to allow overriding (cla: yes)

2661 Reland: [e2e] Replaces the check for ActivityTestRule (#2633) (cla: yes)