drive: DriveIntegrationService owns ResourceMetadataStorage

chrome/browser/chromeos/drive/drive_integration_service.h

Index: chrome/browser/chromeos/drive/drive_integration_service.h
diff --git a/chrome/browser/chromeos/drive/drive_integration_service.h b/chrome/browser/chromeos/drive/drive_integration_service.h
index 4716478270b59ad9034cfff1ea83ef50be9c7b5e..ef954d3ec1e0ca11cda6fd125338b78e2b428b47 100644
--- a/chrome/browser/chromeos/drive/drive_integration_service.h
+++ b/chrome/browser/chromeos/drive/drive_integration_service.h
@@ -36,6 +36,7 @@ class JobListInterface;
 namespace internal {
 class FileCache;
 class ResourceMetadata;
+class ResourceMetadataStorage;
 }  // namespace internal
 
 // Interface for classes that need to observe events from
@@ -146,6 +147,8 @@ class DriveIntegrationService
 
   base::FilePath cache_root_directory_;
   scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
+  scoped_ptr<internal::ResourceMetadataStorage,
+             util::DestroyHelper> metadata_storage_;
   scoped_ptr<internal::FileCache, util::DestroyHelper> cache_;
   scoped_ptr<DriveServiceInterface> drive_service_;
   scoped_ptr<JobScheduler> scheduler_;