[GCM] Extracting GCMConnectionObserver from GCMAppHandler

components/gcm_driver/default_gcm_app_handler.cc

Index: components/gcm_driver/default_gcm_app_handler.cc
diff --git a/components/gcm_driver/default_gcm_app_handler.cc b/components/gcm_driver/default_gcm_app_handler.cc
index 25836731f176941b460a44bfefd964c49db52b77..07fc6e6a30e02d26712c96ac92741e41c5361a9a 100644
--- a/components/gcm_driver/default_gcm_app_handler.cc
+++ b/components/gcm_driver/default_gcm_app_handler.cc
@@ -5,7 +5,6 @@
 #include "components/gcm_driver/default_gcm_app_handler.h"
 
 #include "base/logging.h"
-#include "net/base/ip_endpoint.h"
 
 namespace gcm {
 
@@ -42,14 +41,4 @@ void DefaultGCMAppHandler::OnSendAcknowledged(const std::string& app_id,
            << app_id;
 }
 
-void DefaultGCMAppHandler::OnConnected(const net::IPEndPoint& ip_endpoint) {
-  // TODO(semenzato): update CrOS NIC state.
-  DVLOG(1) << "GCM connected to " << ip_endpoint.ToString();
-}
-
-void DefaultGCMAppHandler::OnDisconnected() {
-  // TODO(semenzato): update CrOS NIC state.
-  DVLOG(1) << "GCM disconnected";
-}
-
 }  // namespace gcm