sync: beginnings of MessageLoop based SyncerThread

chrome/browser/sync/engine/syncer_thread.cc

Index: chrome/browser/sync/engine/syncer_thread.cc
diff --git a/chrome/browser/sync/engine/syncer_thread.cc b/chrome/browser/sync/engine/syncer_thread.cc
index 12b343555faa67f4b270f5d35c506279c9fe9ed3..12bcab049052a40daeb0c779613f16d7f8d1560c 100644
--- a/chrome/browser/sync/engine/syncer_thread.cc
+++ b/chrome/browser/sync/engine/syncer_thread.cc
@@ -336,9 +336,9 @@ void SyncerThread::ThreadMainLoop() {
     // event.  This will also update the source of the following SyncMain call.
     VLOG(1) << "Calling Sync Main at time " << Time::Now().ToInternalValue();
     bool nudged = false;
-    scoped_ptr<SyncSession> session;
-    session.reset(SyncMain(vault_.syncer_,
-        throttled, continue_sync_cycle, &initial_sync_for_thread, &nudged));
+    scoped_refptr<SyncSession> session;
+    session = SyncMain(vault_.syncer_,
+        throttled, continue_sync_cycle, &initial_sync_for_thread, &nudged);
 
     // Update timing information for how often these datatypes are triggering
     // nudges.
@@ -535,12 +535,12 @@ SyncSession* SyncerThread::SyncMain(Syncer* syncer, bool was_throttled,
   session_context_->registrar()->GetWorkers(&workers);
   SyncSourceInfo info(GetAndResetNudgeSource(was_throttled,
       continue_sync_cycle, initial_sync_for_thread, was_nudged));
-  scoped_ptr<SyncSession> session;
+  scoped_refptr<SyncSession> session;
 
   AutoUnlock unlock(lock_);
   do {
-    session.reset(new SyncSession(session_context_.get(), this,
-                                  info, routes, workers));
+    session = new SyncSession(session_context_.get(), this,
+                              info, routes, workers);
     VLOG(1) << "Calling SyncShare.";
     syncer->SyncShare(session.get());
   } while (session->HasMoreToSync() && silenced_until_.is_null());