[Sync] Move DataTypeErrorHandler to //sync.

components/sync_driver/shared_change_processor.h

Index: components/sync_driver/shared_change_processor.h
diff --git a/components/sync_driver/shared_change_processor.h b/components/sync_driver/shared_change_processor.h
index 0695ff2e3ad356b27ddddcea21366048fa11cff6..89f8a94341e3da21d81f4ea5b1ae0a62c9690546 100644
--- a/components/sync_driver/shared_change_processor.h
+++ b/components/sync_driver/shared_change_processor.h
@@ -13,15 +13,16 @@
 #include "base/memory/weak_ptr.h"
 #include "base/single_thread_task_runner.h"
 #include "base/synchronization/lock.h"
-#include "components/sync_driver/data_type_error_handler.h"
 #include "sync/api/sync_change_processor.h"
 #include "sync/api/sync_data.h"
 #include "sync/api/sync_error.h"
 #include "sync/api/sync_error_factory.h"
 #include "sync/api/sync_merge_result.h"
+#include "sync/internal_api/public/data_type_error_handler.h"
 #include "sync/internal_api/public/engine/model_safe_worker.h"
 
 namespace syncer {
+class DataTypeErrorHandler;

[pavely, 2016/05/11 18:29:04]

Could you remove either include or forward-declare?

[maxbogue, 2016/05/11 19:03:02]

Done.

 class SyncableService;
 struct UserShare;
 }  // namespace syncer
@@ -31,7 +32,6 @@ namespace sync_driver {
 class ChangeProcessor;
 class GenericChangeProcessor;
 class GenericChangeProcessorFactory;
-class DataTypeErrorHandler;
 class SyncClient;
 
 // A ref-counted wrapper around a GenericChangeProcessor for use with datatypes
@@ -66,7 +66,7 @@ class SharedChangeProcessor
       SyncClient* sync_client,
       GenericChangeProcessorFactory* processor_factory,
       syncer::UserShare* user_share,
-      DataTypeErrorHandler* error_handler,
+      syncer::DataTypeErrorHandler* error_handler,
       syncer::ModelType type,
       const base::WeakPtr<syncer::SyncMergeResult>& merge_result);
 
@@ -135,7 +135,7 @@ class SharedChangeProcessor
   // Used only on |backend_loop_|.
   GenericChangeProcessor* generic_change_processor_;
 
-  DataTypeErrorHandler* error_handler_;
+  syncer::DataTypeErrorHandler* error_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(SharedChangeProcessor);
 };