ChromeOS: Implement Network Selection screen of material design OOBE.

chrome/browser/ui/webui/chromeos/login/network_dropdown_handler.h

Index: chrome/browser/ui/webui/chromeos/login/network_dropdown_handler.h
diff --git a/chrome/browser/ui/webui/chromeos/login/network_dropdown_handler.h b/chrome/browser/ui/webui/chromeos/login/network_dropdown_handler.h
index 6a707f752b5d1c70bf4721f0a40c3067355a9685..6c70b655d591c603d6807d57ea904c8e79b97127 100644
--- a/chrome/browser/ui/webui/chromeos/login/network_dropdown_handler.h
+++ b/chrome/browser/ui/webui/chromeos/login/network_dropdown_handler.h
@@ -52,6 +52,10 @@ class NetworkDropdownHandler : public BaseScreenHandler,
   // Handles network drop-down refresh.
   void HandleNetworkDropdownRefresh();
 
+  void HandleLaunchProxySettingsDialog();
+  void HandleLaunchAddWiFiNetworkDialog();
+  void HandleLaunchAddMobileNetworkDialog();
+
   std::unique_ptr<NetworkDropdown> dropdown_;
 
   base::ObserverList<Observer> observers_;