Migrate ProxyConfigServiceImpl to NetworkStateHandler and NetworkProfileHandler.

chromeos/network/network_state.cc

Index: chromeos/network/network_state.cc
diff --git a/chromeos/network/network_state.cc b/chromeos/network/network_state.cc
index 7092c2170bc4e818ef24decbd9cc8ab50edd877b..a202d14d28a02a6ad834a08d7e5ff5f278717b86 100644
--- a/chromeos/network/network_state.cc
+++ b/chromeos/network/network_state.cc
@@ -58,6 +58,7 @@ NetworkState::NetworkState(const std::string& path)
       auto_connect_(false),
       favorite_(false),
       priority_(0),
+      onc_source_(onc::ONC_SOURCE_NONE),
       signal_strength_(0),
       connectable_(false),
       passphrase_required_(false),
@@ -167,6 +168,11 @@ void NetworkState::GetProperties(base::DictionaryValue* dictionary) const {
                                              favorite_);
   dictionary->SetIntegerWithoutPathExpansion(flimflam::kPriorityProperty,
                                              priority_);
+  // Proxy config and ONC source is intentionally omitted: These properties are
+  // placed in NetworkState to transition ProxyConfigServiceImpl from
+  // NetworkLibrary to the new network stack. The networking extension API
+  // shouldn't depend on this member. Once ManagedNetworkConfigurationHandler
+  // is used instead of NetworkLibrary, we can remove them again.
   dictionary->SetStringWithoutPathExpansion(
       flimflam::kNetworkTechnologyProperty,
       technology_);