[Sync] Move //components/sync to the syncer namespace, take 2.

components/sync/api/model_type_change_processor.h

Index: components/sync/api/model_type_change_processor.h
diff --git a/components/sync/api/model_type_change_processor.h b/components/sync/api/model_type_change_processor.h
index 3b7df93ac1a65df31dd46fee57191e78a8388f56..4cd7e321ed65c63268cea0f340751fcce454d491 100644
--- a/components/sync/api/model_type_change_processor.h
+++ b/components/sync/api/model_type_change_processor.h
@@ -17,17 +17,16 @@ namespace syncer {
 class SyncError;
 }  // namespace syncer
 
-namespace syncer_v2 {
+namespace syncer {
 
 class MetadataBatch;
 class MetadataChangeList;
 
 // Interface used by the ModelTypeService to inform sync of local
 // changes.
-class ModelTypeChangeProcessor : public syncer::SyncErrorFactory {
+class ModelTypeChangeProcessor : public SyncErrorFactory {
  public:
-  typedef base::Callback<void(syncer::SyncError,
-                              std::unique_ptr<ActivationContext>)>
+  typedef base::Callback<void(SyncError, std::unique_ptr<ActivationContext>)>
       StartCallback;
 
   ModelTypeChangeProcessor();
@@ -47,7 +46,7 @@ class ModelTypeChangeProcessor : public syncer::SyncErrorFactory {
 
   // Accept the initial sync metadata loaded by the service. This should be
   // called as soon as the metadata is available to the service.
-  virtual void OnMetadataLoaded(syncer::SyncError error,
+  virtual void OnMetadataLoaded(SyncError error,
                                 std::unique_ptr<MetadataBatch> batch) = 0;
 
   // Indicates that sync wants to connect a sync worker to this processor. Once
@@ -57,7 +56,7 @@ class ModelTypeChangeProcessor : public syncer::SyncErrorFactory {
   // guaranteed to outlive the processor. StartCallback takes a SyncError and an
   // ActivationContext; the context should be nullptr iff the error is set.
   virtual void OnSyncStarting(
-      std::unique_ptr<syncer::DataTypeErrorHandler> error_handler,
+      std::unique_ptr<DataTypeErrorHandler> error_handler,
       const StartCallback& callback) = 0;
 
   // Indicates that sync is being disabled permanently for this data type. All
@@ -65,6 +64,6 @@ class ModelTypeChangeProcessor : public syncer::SyncErrorFactory {
   virtual void DisableSync() = 0;
 };
 
-}  // namespace syncer_v2
+}  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_API_MODEL_TYPE_CHANGE_PROCESSOR_H_