[Sync] Refactor non-frontend DTC to handle new API properly.

chrome/browser/sync/glue/extension_data_type_controller.cc

Index: chrome/browser/sync/glue/extension_data_type_controller.cc
diff --git a/chrome/browser/sync/glue/extension_data_type_controller.cc b/chrome/browser/sync/glue/extension_data_type_controller.cc
index 11f4a72c6f6c1a644b52e3585944f0af238f840a..b364a574df07dfe08eb323f0e2597123a28b47df 100644
--- a/chrome/browser/sync/glue/extension_data_type_controller.cc
+++ b/chrome/browser/sync/glue/extension_data_type_controller.cc
@@ -6,6 +6,7 @@
 
 #include "base/metrics/histogram.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/sync/glue/generic_change_processor.h"
 #include "chrome/browser/sync/profile_sync_factory.h"
 
 namespace browser_sync {
@@ -36,7 +37,12 @@ void ExtensionDataTypeController::CreateSyncComponents() {
       profile_sync_factory_->CreateExtensionSyncComponents(sync_service_,
                                                      this);
   set_model_associator(sync_components.model_associator);
-  set_change_processor(sync_components.change_processor);
+  change_processor_.reset(reinterpret_cast<GenericChangeProcessor*>(
+      sync_components.change_processor));
+}
+
+ChangeProcessor* ExtensionDataTypeController::change_processor() const {
+  return change_processor_.get();
 }
 
 void ExtensionDataTypeController::RecordUnrecoverableError(