This is the first pass at making GetIPConfigs asynchronous.

chrome/browser/chromeos/cros/network_library_impl_cros.h

Index: chrome/browser/chromeos/cros/network_library_impl_cros.h
diff --git a/chrome/browser/chromeos/cros/network_library_impl_cros.h b/chrome/browser/chromeos/cros/network_library_impl_cros.h
index 6c51fd93990808c6ef991176a5e9dd9dcc4a945d..39918fe08917ece0495603b8faecbde0aa8e3024 100644
--- a/chrome/browser/chromeos/cros/network_library_impl_cros.h
+++ b/chrome/browser/chromeos/cros/network_library_impl_cros.h
@@ -71,7 +71,11 @@ class NetworkLibraryImplCros : public NetworkLibraryImplBase  {
 
   virtual void EnableOfflineMode(bool enable) OVERRIDE;
 
-  virtual NetworkIPConfigVector GetIPConfigs(
+  virtual void GetIPConfigs(
+      const std::string& device_path,
+      HardwareAddressFormat format,
+      const NetworkGetIPConfigsCallback& callback) OVERRIDE;
+  virtual NetworkIPConfigVector GetIPConfigsAndBlock(
       const std::string& device_path,
       std::string* hardware_address,
       HardwareAddressFormat format) OVERRIDE;
@@ -93,6 +97,11 @@ class NetworkLibraryImplCros : public NetworkLibraryImplBase  {
   // and notification should be skipped.
   bool UpdateCellularDeviceStatus(NetworkDevice* device, PropertyIndex index);
 
+  void GetIPConfigsCallback(const NetworkGetIPConfigsCallback& callback,
+                            HardwareAddressFormat format,
+                            const NetworkIPConfigVector& ipconfig_vector,
+                            const std::string& hardware_address);
+
   void PinOperationCallback(const std::string& path,
                             NetworkMethodErrorType error,
                             const std::string& error_message);
@@ -105,23 +114,25 @@ class NetworkLibraryImplCros : public NetworkLibraryImplBase  {
                               NetworkMethodErrorType error,
                               const std::string& error_message);
 
-  void WifiServiceUpdateAndConnect(const std::string& service_path,
-                                   const base::DictionaryValue* properties);
+  void WifiServiceUpdateAndConnect(
+      const std::string& service_path,
+      scoped_ptr<base::DictionaryValue> properties);
   void VPNServiceUpdateAndConnect(const std::string& service_path,
-                                  const base::DictionaryValue* properties);
+                                  scoped_ptr<base::DictionaryValue> properties);
 
   void NetworkManagerStatusChangedHandler(const std::string& path,
                                           const std::string& key,
                                           const base::Value& value);
   void NetworkManagerUpdate(const std::string& manager_path,
-                            const base::DictionaryValue* properties);
+                            scoped_ptr<base::DictionaryValue> properties);
 
   void NetworkServiceUpdate(const std::string& service_path,
-                            const base::DictionaryValue* properties);
-  void RememberedNetworkServiceUpdate(const std::string& service_path,
-                                      const base::DictionaryValue* properties);
+                            scoped_ptr<base::DictionaryValue> properties);
+  void RememberedNetworkServiceUpdate(
+      const std::string& service_path,
+      scoped_ptr<base::DictionaryValue> properties);
   void NetworkDeviceUpdate(const std::string& device_path,
-                           const base::DictionaryValue* properties);
+                           scoped_ptr<base::DictionaryValue> properties);
 
  private:
   // Structure used to pass IP parameter info to a DoSetIPParameters callback,
@@ -133,12 +144,12 @@ class NetworkLibraryImplCros : public NetworkLibraryImplBase  {
   // fetch is complete.
   void SetIPParametersCallback(const IPParameterInfo& info,
                                const std::string& service_path,
-                               const base::DictionaryValue* properties);
+                               scoped_ptr<base::DictionaryValue> properties);
 
   // Second half of refreshing IPConfig for a network.  Refreshes all IP config
   // paths found in properties.
   void RefreshIPConfigCallback(const std::string& device_path,
-                               const base::DictionaryValue* properties);
+                               scoped_ptr<base::DictionaryValue> properties);
 
   // This processes all Manager update messages.
   bool NetworkManagerStatusChanged(const std::string& key, const Value* value);
@@ -157,7 +168,7 @@ class NetworkLibraryImplCros : public NetworkLibraryImplBase  {
   void UpdateRememberedNetworks(const base::ListValue* profiles);
   void RequestRememberedNetworksUpdate();
   void UpdateProfile(const std::string& profile_path,
-                     const base::DictionaryValue* properties);
+                     scoped_ptr<base::DictionaryValue> properties);
   Network* ParseRememberedNetwork(const std::string& service_path,
                                   const base::DictionaryValue& info);