This adds Cros API for calling the "Refresh" function on shill's

chrome/browser/chromeos/cros/network_library_impl_cros.cc

Index: chrome/browser/chromeos/cros/network_library_impl_cros.cc
diff --git a/chrome/browser/chromeos/cros/network_library_impl_cros.cc b/chrome/browser/chromeos/cros/network_library_impl_cros.cc
index 21b12a53f052abba6c5d32e0d5012c8614f42761..da0a2aec5c2d631d97ceb72788a716dd36db81b5 100644
--- a/chrome/browser/chromeos/cros/network_library_impl_cros.cc
+++ b/chrome/browser/chromeos/cros/network_library_impl_cros.cc
@@ -5,9 +5,11 @@
 #include "chrome/browser/chromeos/cros/network_library_impl_cros.h"
 
 #include <dbus/dbus-glib.h>
+#include "base/bind.h"
 #include "base/command_line.h"
 #include "base/json/json_writer.h"  // for debug output only.
 #include "base/metrics/histogram.h"
+#include "base/values.h"
 #include "chrome/browser/chromeos/cros/cros_library.h"
 #include "chrome/browser/chromeos/cros/native_network_constants.h"
 #include "chrome/browser/chromeos/cros/native_network_parser.h"
@@ -456,6 +458,30 @@ bool NetworkLibraryImplCros::GetWifiAccessPoints(
   return CrosGetWifiAccessPoints(result);
 }
 
+void NetworkLibraryImplCros::RefreshIPConfig(Network* network) {
+  DCHECK(network);
+  CrosRequestNetworkDeviceProperties(
+      network->device_path(),
+      base::Bind(&NetworkLibraryImplCros::RefreshIPConfigCallback,
+                 weak_ptr_factory_.GetWeakPtr()));
+}
+
+void NetworkLibraryImplCros::RefreshIPConfigCallback(
+    const std::string& device_path,
+    const base::DictionaryValue* properties) {
+  const ListValue* ips = NULL;
+  if (!properties->GetListWithoutPathExpansion(
+      flimflam::kIPConfigsProperty, &ips))
+    return;
+
+  for (size_t i = 0; i < ips->GetSize(); i++) {
+    std::string ipconfig_path;
+    if (!ips->GetString(i, &ipconfig_path))
+      continue;
+    CrosRequestIPConfigRefresh(ipconfig_path);
+  }
+}
+
 void NetworkLibraryImplCros::DisconnectFromNetwork(const Network* network) {
   DCHECK(network);
   // Asynchronous disconnect request. Network state will be updated through