2516 [e2e] Avoid running failure test using native instrumentation test frameworks (cla: yes)

2517 [webview_flutter] Remove the upper bound from the Flutter SDK constraint (cla: yes)

2518 [in_app_purchase] Fix version. (cla: yes)

2519 [connectivity_platform_interface] Fix README (cla: yes)

2522 [shared_preferences] Fix README broken link (cla: yes)

2523 [google_maps_flutter] Move google_maps_flutter to its own subdir. (cla: yes, waiting for test harness)

2525 Add matthew-carroll to reviewers (cla: yes)

2526 [connectivity] Migrate more logic to method channel platform (cla: yes, waiting for test harness)