Notify GCMAppHandlers when the store is reset, so they clear cached IDs

components/invalidation/impl/gcm_network_channel_delegate.h

Index: components/invalidation/impl/gcm_network_channel_delegate.h
diff --git a/components/invalidation/impl/gcm_network_channel_delegate.h b/components/invalidation/impl/gcm_network_channel_delegate.h
index 0a0356369a7183a53b144b77e1e0b443243c1fa8..218ac663f9e6b0600f71bce57ba05a344af5c836 100644
--- a/components/invalidation/impl/gcm_network_channel_delegate.h
+++ b/components/invalidation/impl/gcm_network_channel_delegate.h
@@ -34,7 +34,8 @@ class GCMNetworkChannelDelegate {
 
   virtual ~GCMNetworkChannelDelegate() {}
 
-  virtual void Initialize(ConnectionStateCallback callback) = 0;
+  virtual void Initialize(ConnectionStateCallback connection_state_callback,
+                          base::Closure store_reset_callback) = 0;
   // Request access token. Callback should be called either with access token or
   // error code.
   virtual void RequestToken(RequestTokenCallback callback) = 0;