package androidx.browser.customtabs; import android.content.Context; import android.os.Bundle; import androidx.annotation.NonNull; import androidx.annotation.Nullable; import androidx.annotation.RestrictTo; @RestrictTo({RestrictTo.Scope.LIBRARY}) public interface PostMessageBackend { void onDisconnectChannel(@NonNull Context context); boolean onNotifyMessageChannelReady(@Nullable Bundle bundle); boolean onPostMessage(@NonNull String str, @Nullable Bundle bundle); }