[Sync] Have SyncableService's take ownership of their SyncChangeProcessor.

chrome/browser/prefs/pref_model_associator.h

Index: chrome/browser/prefs/pref_model_associator.h
diff --git a/chrome/browser/prefs/pref_model_associator.h b/chrome/browser/prefs/pref_model_associator.h
index 3d2fd1f23d20d982461b40693507dc9994dc46f1..c09821510a93c9b76052cddd45824ed5f86c5ca0 100644
--- a/chrome/browser/prefs/pref_model_associator.h
+++ b/chrome/browser/prefs/pref_model_associator.h
@@ -43,7 +43,7 @@ class PrefModelAssociator
   virtual SyncError MergeDataAndStartSyncing(
       syncable::ModelType type,
       const SyncDataList& initial_sync_data,
-      SyncChangeProcessor* sync_processor) OVERRIDE;
+      scoped_ptr<SyncChangeProcessor> sync_processor) OVERRIDE;
   virtual void StopSyncing(syncable::ModelType type) OVERRIDE;
 
   // Returns the list of preference names that are registered as syncable, and
@@ -141,7 +141,7 @@ class PrefModelAssociator
   PrefService* pref_service_;
 
   // Sync's SyncChange handler. We push all our changes through this.
-  SyncChangeProcessor* sync_processor_;
+  scoped_ptr<SyncChangeProcessor> sync_processor_;
 
   DISALLOW_COPY_AND_ASSIGN(PrefModelAssociator);
 };