Add WiFi SSID getter to NetworkChangeNotifier.

chrome/browser/speech/extension_api/tts_extension_apitest.cc

Index: chrome/browser/speech/extension_api/tts_extension_apitest.cc
diff --git a/chrome/browser/speech/extension_api/tts_extension_apitest.cc b/chrome/browser/speech/extension_api/tts_extension_apitest.cc
index 386175a6d77d0b41fb0ec9c203abb3cae3a519a8..9f8e86bce443e3b6ce694ad16ceca4dcee1db00e 100644
--- a/chrome/browser/speech/extension_api/tts_extension_apitest.cc
+++ b/chrome/browser/speech/extension_api/tts_extension_apitest.cc
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include <string>
 #include <vector>
 
 #include "base/bind.h"
@@ -177,6 +178,8 @@ class FakeNetworkOnlineStateForTest : public net::NetworkChangeNotifier {
         net::NetworkChangeNotifier::CONNECTION_NONE;
   }
 
+  std::string GetCurrentWiFiSSID() const override { return ""; }
+
  private:
   bool online_;
   DISALLOW_COPY_AND_ASSIGN(FakeNetworkOnlineStateForTest);