Substituting pattern push_back(ptr.release()) with push_back(ptr.Pass()) in sync/

BUG=457697

Review URL: https://codereview.chromium.org/1132343003

Cr-Commit-Position: refs/heads/master@{#329619}

sync/internal_api/protocol_event_buffer.cc

@@ -29,7 +29,7 @@ ProtocolEventBuffer::GetBufferedProtocolEvents() const {
   ScopedVector<ProtocolEvent> ret;
   for (std::deque<ProtocolEvent*>::const_iterator it = buffer_.begin();
        it != buffer_.end(); ++it) {
-    ret.push_back((*it)->Clone().release());
+    ret.push_back((*it)->Clone().Pass());
   }
   return ret.Pass();
 }

sync/sessions/model_type_registry.cc

@@ -225,7 +225,7 @@ void ModelTypeRegistry::ConnectSyncTypeToWorker(
   commit_contributor_map_.insert(std::make_pair(type, worker.get()));
 
   // The container takes ownership.
-  model_type_sync_workers_.push_back(worker.release());
+  model_type_sync_workers_.push_back(worker.Pass());
 
   DCHECK(Intersection(GetEnabledDirectoryTypes(),
                       GetEnabledNonBlockingTypes()).Empty());