Add WiFi SSID getter to NetworkChangeNotifier.

chrome/browser/ui/search/instant_extended_interactive_uitest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <sstream>
 
 #include "base/command_line.h"
 #include "base/metrics/histogram_base.h"
 #include "base/metrics/histogram_samples.h"
 #include "base/metrics/statistics_recorder.h"
@@ skipping 91 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(QuittingHistoryDBTask);
 };
 
 class FakeNetworkChangeNotifier : public net::NetworkChangeNotifier {
  public:
   FakeNetworkChangeNotifier() : connection_type_(CONNECTION_NONE) {}
 
   ConnectionType GetCurrentConnectionType() const override {
     return connection_type_;
   }
+  std::string GetCurrentWiFiSSID() const override {
+    return "";
+  }
 
   void SetConnectionType(ConnectionType type) {
     connection_type_ = type;
     NotifyObserversOfNetworkChange(type);
     base::RunLoop().RunUntilIdle();
   }
 
   ~FakeNetworkChangeNotifier() override {}
 
  private:
@@ skipping 846 matching lines @@
   stream << "link.href = \"" << result_url.spec() << "\";";
   stream << "document.body.appendChild(link);";
   stream << "link.click();";
   EXPECT_TRUE(content::ExecuteScript(contents, stream.str()));
 
   content::WaitForLoadStop(contents);
   std::string expected_title =
       "Referrer is " + instant_url().GetWithEmptyPath().spec();
   EXPECT_EQ(ASCIIToUTF16(expected_title), contents->GetTitle());
 }