Add SSID getter to WiFiService

components/wifi/wifi_service.h

Index: components/wifi/wifi_service.h
diff --git a/components/wifi/wifi_service.h b/components/wifi/wifi_service.h
index 2fec66e82b60b8b85b0df38c226e2655fc87707b..0e162c819f46c951b28c0b78839f0e4b1aeaad5a 100644
--- a/components/wifi/wifi_service.h
+++ b/components/wifi/wifi_service.h
@@ -118,6 +118,10 @@ class WIFI_EXPORT WiFiService {
   // event on completion.
   virtual void RequestConnectedNetworkUpdate() = 0;
 
+  // Get the GUID of the currently connected network, if any.

[mef, 2015/01/28 22:41:39]

I think for UI presentation you should explicitly get SSID instead. Yes,
currently GUID is the same as SSID, but this is subject to change. Also,
apparently there are SSIDs that cannot be represented in utf-8
(https://code.google.com/p/chromium/issues/detail?id=432546).

pneubeck has introduced HexSSID and I'm planning to add support for that on Win
and Mac.

+  virtual void GetConnectedNetworkGUID(std::string* guid,
+                                       std::string* error) = 0;
+
  protected:
   WiFiService() {}