Notify SyncNetworkChannel about GCM connection state

components/invalidation/gcm_network_channel.cc

Index: components/invalidation/gcm_network_channel.cc
diff --git a/components/invalidation/gcm_network_channel.cc b/components/invalidation/gcm_network_channel.cc
index 7ee08af685af0eabe9fd275be41420d03a05919b..43081b9fb934902531e62a2aa9821446578c1bff 100644
--- a/components/invalidation/gcm_network_channel.cc
+++ b/components/invalidation/gcm_network_channel.cc
@@ -110,7 +110,8 @@ GCMNetworkChannel::GCMNetworkChannel(
       diagnostic_info_(this),
       weak_factory_(this) {
   net::NetworkChangeNotifier::AddNetworkChangeObserver(this);
-  delegate_->Initialize();
+  delegate_->Initialize(base::Bind(&GCMNetworkChannel::OnConnectionStateChanged,
+                                   weak_factory_.GetWeakPtr()));
   Register();
 }
 
@@ -283,6 +284,24 @@ void GCMNetworkChannel::OnIncomingMessage(const std::string& message,
 #endif
 }
 
+void GCMNetworkChannel::OnConnectionStateChanged(
+    GCMNetworkChannelDelegate::ConnectionState connection_state) {
+  switch (connection_state) {
+    case GCMNetworkChannelDelegate::CONNECTION_STATE_OFFLINE: {
+      NotifyStateChange(TRANSIENT_INVALIDATION_ERROR);
+      break;
+    }
+    case GCMNetworkChannelDelegate::CONNECTION_STATE_ONLINE: {
+      NotifyStateChange(INVALIDATIONS_ENABLED);
+      break;
+    }
+    default: {
+      NOTREACHED();
+      break;
+    }
+  }
+}
+
 void GCMNetworkChannel::OnNetworkChanged(
     net::NetworkChangeNotifier::ConnectionType connection_type) {
   // Network connection is restored. Let's notify cacheinvalidations so it has