Convert path usage in NetworkListViewBase subclasses to use guids.

ash/common/system/tray/system_tray_notifier.cc

 // Copyright 2016 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 "ash/common/system/tray/system_tray_notifier.h"
 
 #include "ash/common/system/accessibility_observer.h"
 #include "ash/common/system/chromeos/bluetooth/bluetooth_observer.h"
 #include "ash/common/system/chromeos/enterprise/enterprise_domain_observer.h"
 #include "ash/common/system/chromeos/network/network_observer.h"
@@ skipping 163 matching lines @@
     NetworkPortalDetectorObserver* observer) {
   network_portal_detector_observers_.AddObserver(observer);
 }
 
 void SystemTrayNotifier::RemoveNetworkPortalDetectorObserver(
     NetworkPortalDetectorObserver* observer) {
   network_portal_detector_observers_.RemoveObserver(observer);
 }
 
 void SystemTrayNotifier::NotifyOnCaptivePortalDetected(
-    const std::string& service_path) {
+    const std::string& guid) {
   for (auto& observer : network_portal_detector_observers_)
-    observer.OnCaptivePortalDetected(service_path);
+    observer.OnCaptivePortalDetected(guid);
 }
 
 void SystemTrayNotifier::AddScreenCaptureObserver(
     ScreenCaptureObserver* observer) {
   screen_capture_observers_.AddObserver(observer);
 }
 
 void SystemTrayNotifier::RemoveScreenCaptureObserver(
     ScreenCaptureObserver* observer) {
   screen_capture_observers_.RemoveObserver(observer);
@@ skipping 93 matching lines @@
   virtual_keyboard_observers_.RemoveObserver(observer);
 }
 
 void SystemTrayNotifier::NotifyVirtualKeyboardSuppressionChanged(
     bool suppressed) {
   for (auto& observer : virtual_keyboard_observers_)
     observer.OnKeyboardSuppressionChanged(suppressed);
 }
 
 }  // namespace ash