[Sync] Rename DataTypeState to ModelTypeState.

components/sync/core/simple_metadata_change_list.h

Index: components/sync/core/simple_metadata_change_list.h
diff --git a/components/sync/core/simple_metadata_change_list.h b/components/sync/core/simple_metadata_change_list.h
index 5a0d8c3671a3b819224c0cf3c0631e3cb7fd4b9f..e408b82e3ce4c209e1ff1d24abb923a84ca4e976 100644
--- a/components/sync/core/simple_metadata_change_list.h
+++ b/components/sync/core/simple_metadata_change_list.h
@@ -12,8 +12,8 @@
 #include "components/sync/api/metadata_change_list.h"
 #include "components/sync/api/model_type_store.h"
 #include "components/sync/core/non_blocking_sync_common.h"
-#include "components/sync/protocol/data_type_state.pb.h"
 #include "components/sync/protocol/entity_metadata.pb.h"
+#include "components/sync/protocol/model_type_state.pb.h"
 
 namespace syncer {
 
@@ -29,9 +29,9 @@ class SimpleMetadataChangeList : public MetadataChangeList {
     sync_pb::EntityMetadata metadata;
   };
 
-  struct DataTypeStateChange {
+  struct ModelTypeStateChange {
     ChangeType type;
-    sync_pb::DataTypeState state;
+    sync_pb::ModelTypeState state;
   };
 
   typedef std::map<std::string, MetadataChange> MetadataChanges;
@@ -39,16 +39,16 @@ class SimpleMetadataChangeList : public MetadataChangeList {
   SimpleMetadataChangeList();
   ~SimpleMetadataChangeList() override;
 
-  void UpdateDataTypeState(
-      const sync_pb::DataTypeState& data_type_state) override;
-  void ClearDataTypeState() override;
+  void UpdateModelTypeState(
+      const sync_pb::ModelTypeState& model_type_state) override;
+  void ClearModelTypeState() override;
   void UpdateMetadata(const std::string& client_tag,
                       const sync_pb::EntityMetadata& metadata) override;
   void ClearMetadata(const std::string& client_tag) override;
 
   const MetadataChanges& GetMetadataChanges() const;
-  bool HasDataTypeStateChange() const;
-  const DataTypeStateChange& GetDataTypeStateChange() const;
+  bool HasModelTypeStateChange() const;
+  const ModelTypeStateChange& GetModelTypeStateChange() const;
 
   // Moves all currently accumulated changes into the write batch, clear out
   // local copies. Calling this multiple times will work, but should not be
@@ -58,7 +58,7 @@ class SimpleMetadataChangeList : public MetadataChangeList {
 
  private:
   MetadataChanges metadata_changes_;
-  std::unique_ptr<DataTypeStateChange> state_change_;
+  std::unique_ptr<ModelTypeStateChange> state_change_;
 };
 
 }  // namespace syncer