Server directed error handling backend code.

chrome/browser/sync/engine/syncer_proto_util.h

Index: chrome/browser/sync/engine/syncer_proto_util.h
diff --git a/chrome/browser/sync/engine/syncer_proto_util.h b/chrome/browser/sync/engine/syncer_proto_util.h
index faf1900437ba46b051e4e346c5705d3a53c6133f..860e7834817ed5b1522a96572a38f6cd2d5102ac 100644
--- a/chrome/browser/sync/engine/syncer_proto_util.h
+++ b/chrome/browser/sync/engine/syncer_proto_util.h
@@ -9,6 +9,8 @@
 #include <string>
 
 #include "base/gtest_prod_util.h"
+#include "chrome/browser/sync/engine/sync_error.h"
+#include "chrome/browser/sync/protocol/sync.pb.h"
 #include "chrome/browser/sync/syncable/blob.h"
 #include "chrome/browser/sync/syncable/model_type.h"
 
@@ -36,6 +38,8 @@ class ServerConnectionManager;
 class SyncEntity;
 class CommitResponse_EntryResponse;
 
+bool ShouldRequestEarlyExit(const sync_api::SyncError& error);
+
 class SyncerProtoUtil {
  public:
   // Posts the given message and fills the buffer with the returned value.