Fix for UserAgent.h issues

Fix for UserAgent.h issues

Fix for UserAgent.h issues

Fix for UserAgent.h issues

[Firebase-Admob]Added note about GoogleService-list.plist (firebase#2125

)

[firebase_crashlytics] Remove WorkspaceSettings.xcsettings (firebase#…

…2152)

* Remove WorkspaceSettings.xcsettings

[cloud_firestore, cloud_firestore_web] Fix encoding issues in Documen…

…tSnapshotPlatform and FieldValueFactoryWeb (firebase#2105)

* [cloud_firestore_web] Ensure FieldValueFactoryWeb encodes params.
* [cloud_firestore] Ensure `DocumentSnapshotPlatform` is well encoded.

Also tweak some integ tests so everything passes now, in Android.

Fixes firebase#2044

[cloud_firestore, cloud_firestore_web] Fix encoding issues in Documen…

…tSnapshotPlatform and FieldValueFactoryWeb (firebase#2105)

* [cloud_firestore_web] Ensure FieldValueFactoryWeb encodes params.
* [cloud_firestore] Ensure `DocumentSnapshotPlatform` is well encoded.

Also tweak some integ tests so everything passes now, in Android.

Fixes firebase#2044

Replace deprecated getFlutterEngine calls on Android (firebase#2050)

* Resolve firebase#2049

Replace deprecated getFlutterEngine calls on Android (firebase#2050)

* Resolve firebase#2049