Only re-enable remote service if the task used the network.

chrome/browser/sync_file_system/drive_backend/sync_engine.h

Index: chrome/browser/sync_file_system/drive_backend/sync_engine.h
diff --git a/chrome/browser/sync_file_system/drive_backend/sync_engine.h b/chrome/browser/sync_file_system/drive_backend/sync_engine.h
index cec041fa3493ad169ae7d832a2c6951b75e6252a..4549d9e0058f78b1e951912d9949f2fc11e28dc5 100644
--- a/chrome/browser/sync_file_system/drive_backend/sync_engine.h
+++ b/chrome/browser/sync_file_system/drive_backend/sync_engine.h
@@ -101,7 +101,8 @@ class SyncEngine : public RemoteFileSyncService,
 
   // SyncTaskManager::Client overrides.
   virtual void MaybeScheduleNextTask() OVERRIDE;
-  virtual void NotifyLastOperationStatus(SyncStatusCode sync_status) OVERRIDE;
+  virtual void NotifyLastOperationStatus(SyncStatusCode sync_status,
+                                         bool used_network) OVERRIDE;
 
   // drive::DriveNotificationObserver overrides.
   virtual void OnNotificationReceived() OVERRIDE;
@@ -140,7 +141,8 @@ class SyncEngine : public RemoteFileSyncService,
   void DidFetchChangeList(SyncStatusCallback& callback);
 
   void MaybeStartFetchChanges();
-  void UpdateServiceStateFromSyncStatusCode(SyncStatusCode state);
+  void UpdateServiceStateFromSyncStatusCode(SyncStatusCode state,
+                                            bool used_network);
   void UpdateServiceState(RemoteServiceState state,
                           const std::string& description);
   void UpdateRegisteredApps();