Add WebViewClient to android callback list

Author: MarcMil

soot-infoflow-android/AndroidCallbacks.txt

@@ -349,6 +349,7 @@ android.webkit.WebMessagePort$WebMessageCallback
 android.webkit.WebView$FindListener
 android.webkit.WebView$PictureListener
 android.webkit.WebView$VisualStateCallback
+android.webkit.WebViewClient
 android.widget.AbsListView$MultiChoiceModeListener
 android.widget.AbsListView$OnScrollListener
 android.widget.AbsListView$RecyclerListener
@@ -401,4 +402,4 @@ javax.security.auth.callback.PasswordCallback
 javax.sql.ConnectionEventListener
 javax.sql.RowSetListener
 javax.sql.StatementEventListener
-javax.xml.transform.ErrorListener
+javax.xml.transform.ErrorListener