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components/sync/engine_impl/model_type_worker.h

Index: components/sync/engine_impl/model_type_worker.h
diff --git a/components/sync/engine_impl/model_type_worker.h b/components/sync/engine_impl/model_type_worker.h
index c5fb7154f4988cb6b1b4ff0bfd7ce7034bd4decf..3bb849cd3a71ed0bace91f9b9272d901bd186fb9 100644
--- a/components/sync/engine_impl/model_type_worker.h
+++ b/components/sync/engine_impl/model_type_worker.h
@@ -19,6 +19,7 @@
 #include "components/sync/engine/non_blocking_sync_common.h"
 #include "components/sync/engine/sync_encryption_handler.h"
 #include "components/sync/engine_impl/commit_contributor.h"
+#include "components/sync/engine_impl/cycle/non_blocking_type_debug_info_emitter.h"
 #include "components/sync/engine_impl/nudge_handler.h"
 #include "components/sync/engine_impl/update_handler.h"
 #include "components/sync/protocol/model_type_state.pb.h"
@@ -58,6 +59,7 @@ class ModelTypeWorker : public UpdateHandler,
                         public CommitQueue {
  public:
   ModelTypeWorker(ModelType type,
+                  NonBlockingTypeDebugInfoEmitter* debug_info_emitter,

[pavely, 2016/10/19 18:18:59]

Could you move emitter parameter to the end of parameter list similar how you
did in non_blocking_type_commit_contribution? And move corresponding field
towards the end of this class.

[pavely, 2016/10/19 18:18:59]

Does ModelTypeWorker call any methods that are specific to
NonBlockingTypeDebugInfoEmitter? If not then it is better to pass base class
pointer.

[Gang Wu, 2016/10/20 21:35:36]

Done.

[Gang Wu, 2016/10/20 21:35:36]

Done.

                   const sync_pb::ModelTypeState& initial_state,
                   std::unique_ptr<Cryptographer> cryptographer,
                   NudgeHandler* nudge_handler,
@@ -143,6 +145,7 @@ class ModelTypeWorker : public UpdateHandler,
   WorkerEntityTracker* GetOrCreateEntityTracker(const EntityData& data);
 
   ModelType type_;
+  NonBlockingTypeDebugInfoEmitter* debug_info_emitter_;
 
   // State that applies to the entire model type.
   sync_pb::ModelTypeState model_type_state_;