Split up SyncEngineEventListener callbacks

sync/sessions/sync_session.h

Index: sync/sessions/sync_session.h
diff --git a/sync/sessions/sync_session.h b/sync/sessions/sync_session.h
index e25c7189ebef3ab46fe44a526381cd6cf40c9a16..4e885922f90bfcd682c497733e66ac6be433717d 100644
--- a/sync/sessions/sync_session.h
+++ b/sync/sessions/sync_session.h
@@ -23,6 +23,7 @@
 #include "sync/internal_api/public/base/model_type.h"
 #include "sync/internal_api/public/engine/model_safe_worker.h"
 #include "sync/internal_api/public/sessions/sync_session_snapshot.h"
+#include "sync/protocol/sync_protocol_error.h"
 #include "sync/sessions/status_controller.h"
 #include "sync/sessions/sync_session_context.h"
 
@@ -75,7 +76,7 @@ class SYNC_EXPORT_PRIVATE SyncSession {
 
     // Called for the syncer to respond to the error sent by the server.
     virtual void OnSyncProtocolError(
-        const sessions::SyncSessionSnapshot& snapshot) = 0;
+        const SyncProtocolError& sync_protocol_error) = 0;
 
     // Called when the server wants to change the number of hints the client
     // will buffer locally.
@@ -103,7 +104,7 @@ class SYNC_EXPORT_PRIVATE SyncSession {
   // Builds and sends a snapshot to the session context's listeners.
   void SendSyncCycleEndEventNotification(
       sync_pb::GetUpdatesCallerInfo::GetUpdatesSource source);
-  void SendEventNotification(SyncEngineEvent::EventCause cause);
+  void SendEventNotification(SyncCycleEvent::EventCause cause);
 
   // TODO(akalin): Split this into context() and mutable_context().
   SyncSessionContext* context() const { return context_; }