Fixed proxy settings button behaviour: it becomes disabled when device isn't connected to any netwo…

chrome/browser/chromeos/system/ash_system_tray_delegate.cc

Index: chrome/browser/chromeos/system/ash_system_tray_delegate.cc
diff --git a/chrome/browser/chromeos/system/ash_system_tray_delegate.cc b/chrome/browser/chromeos/system/ash_system_tray_delegate.cc
index ceefff67f41b68ba67913d7aca9a6172204df8f3..ff5bdb9cbe0944199053b69e3236cbc3b12f081e 100644
--- a/chrome/browser/chromeos/system/ash_system_tray_delegate.cc
+++ b/chrome/browser/chromeos/system/ash_system_tray_delegate.cc
@@ -650,6 +650,10 @@ class SystemTrayDelegate : public ash::SystemTrayDelegate,
     network_menu_->ShowOtherCellular();
   }
 
+  virtual bool Connected() OVERRIDE {
+    return CrosLibrary::Get()->GetNetworkLibrary()->Connected();
+  }
+
   virtual bool GetWifiAvailable() OVERRIDE {
     return CrosLibrary::Get()->GetNetworkLibrary()->wifi_available();
   }