cros: Fix networkingPrivate.getNetworks IDL validation error

The IDL file did not fully specify all of the output.

Bug: 887688
Change-Id: I5ee75419006a27504e978164379acf7c024988db
Reviewed-on: https://chromium-review.googlesource.com/1237374
Commit-Queue: Steven Bennetts <stevenjb@chromium.org>
Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#593004}

extensions/common/api/networking_private.idl

@@ -587,6 +587,10 @@ namespace networkingPrivate {
     long? SignalStrength;
   };
 
+  dictionary EAPStateProperties {
+    DOMString? Outer;
+  };
+
   dictionary EthernetProperties {
     boolean? AutoConnect;
     DOMString? Authentication;
@@ -677,6 +681,7 @@ namespace networkingPrivate {
 
   dictionary WiFiStateProperties {
     DOMString? BSSID;
+    EAPStateProperties? EAP;
     long? Frequency;
     DOMString? HexSSID;
     DOMString Security;