[Sync] Move ModelType and related classes to 'syncer' namespace

chrome/browser/sync/glue/frontend_data_type_controller.h

Index: chrome/browser/sync/glue/frontend_data_type_controller.h
diff --git a/chrome/browser/sync/glue/frontend_data_type_controller.h b/chrome/browser/sync/glue/frontend_data_type_controller.h
index 4b34bbb22e248eb489003c21526a56ea82808d67..86abd7b752ad8377c69f2995a159d25c6ae9f643 100644
--- a/chrome/browser/sync/glue/frontend_data_type_controller.h
+++ b/chrome/browser/sync/glue/frontend_data_type_controller.h
@@ -36,7 +36,7 @@ class ChangeProcessor;
 // don't have to worry about thread safety. The main start/stop funtionality is
 // implemented by default.
 // Derived classes must implement (at least):
-//    syncable::ModelType type() const
+//    syncer::ModelType type() const
 //    void CreateSyncComponents();
 // NOTE: This class is deprecated! New sync datatypes should be using the
 // syncer::SyncableService API and the UIDataTypeController instead.
@@ -53,7 +53,7 @@ class FrontendDataTypeController : public DataTypeController {
       const ModelLoadCallback& model_load_callback) OVERRIDE;
   virtual void StartAssociating(const StartCallback& start_callback) OVERRIDE;
   virtual void Stop() OVERRIDE;
-  virtual syncable::ModelType type() const = 0;
+  virtual syncer::ModelType type() const = 0;
   virtual syncer::ModelSafeGroup model_safe_group() const OVERRIDE;
   virtual std::string name() const OVERRIDE;
   virtual State state() const OVERRIDE;