Thanks for your reponse !
I don't know how "proxy my network traffic" on app develop with ionic Framework ?
Otherwise I found the following line in AndroidManifest.xml : <meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version" />.
And for the third "method", I found com.google.android.gms.ads.AdActivity in AndroidManifest.xml and other file, import com.google.android.gms.ads.* in /cordova/plugin/AdMob.java
Should I worry me the deprecation ?
Thank you again for your help !