Made CacheInvalidationPacketHandler aware of XmppClient state changes.

chrome/browser/sync/notifier/cache_invalidation_packet_handler.h

Index: chrome/browser/sync/notifier/cache_invalidation_packet_handler.h
diff --git a/chrome/browser/sync/notifier/cache_invalidation_packet_handler.h b/chrome/browser/sync/notifier/cache_invalidation_packet_handler.h
index e3e89f2066065de5dfd50894f97b084bcf5c93ae..b1ed258ea69a7a594daa92f0a532b24111bd9d51 100644
--- a/chrome/browser/sync/notifier/cache_invalidation_packet_handler.h
+++ b/chrome/browser/sync/notifier/cache_invalidation_packet_handler.h
@@ -12,7 +12,9 @@
 #include <string>
 
 #include "base/basictypes.h"
+#include "talk/base/sigslot.h"
 #include "talk/xmpp/jid.h"
+#include "talk/xmpp/xmppengine.h"
 
 namespace buzz {
 class XmppClient;
@@ -27,7 +29,7 @@ namespace sync_notifier {
 
 // TODO(akalin): Add a NonThreadSafe member to this class and use it.
 
-class CacheInvalidationPacketHandler {
+class CacheInvalidationPacketHandler : public sigslot::has_slots<> {
  public:
   // Starts routing packets from |invalidation_client| through
   // |xmpp_client|.  |invalidation_client| must not already be routing
@@ -48,6 +50,8 @@ class CacheInvalidationPacketHandler {
 
   void HandleInboundPacket(const std::string& packet);
 
+  void OnClientStateChange(buzz::XmppEngine::State state);
+
   buzz::XmppClient* xmpp_client_;
   invalidation::InvalidationClient* invalidation_client_;