SyncFS: Introduce SyncFileSystemBackend

webkit/browser/fileapi/syncable/canned_syncable_file_system.h

Index: webkit/browser/fileapi/syncable/canned_syncable_file_system.h
diff --git a/webkit/browser/fileapi/syncable/canned_syncable_file_system.h b/webkit/browser/fileapi/syncable/canned_syncable_file_system.h
index 24a1ba54503c511869793ea6d42a453071f430de..e04f5d2e3e50537b06a91cbee8640fb463cdb8a4 100644
--- a/webkit/browser/fileapi/syncable/canned_syncable_file_system.h
+++ b/webkit/browser/fileapi/syncable/canned_syncable_file_system.h
@@ -17,6 +17,7 @@
 #include "webkit/browser/fileapi/file_system_url.h"
 #include "webkit/browser/fileapi/syncable/local_file_sync_status.h"
 #include "webkit/browser/fileapi/syncable/sync_status_code.h"
+#include "webkit/browser/fileapi/syncable/syncable_sandbox_mount_point_provider.h"
 #include "webkit/browser/quota/quota_callbacks.h"
 #include "webkit/common/fileapi/file_system_types.h"
 #include "webkit/common/fileapi/file_system_util.h"
@@ -45,6 +46,7 @@ class QuotaManager;
 namespace sync_file_system {
 
 class LocalFileSyncContext;
+class SyncableSandboxMountPointProvider;
 
 // A canned syncable filesystem for testing.
 // This internally creates its own QuotaManager and FileSystemContext
@@ -138,6 +140,7 @@ class CannedSyncableFileSystem
   void GetChangedURLsInTracker(fileapi::FileSystemURLSet* urls);
   void ClearChangeForURLInTracker(const fileapi::FileSystemURL& url);
 
+  SyncableSandboxMountPointProvider* mount_provider();
   fileapi::FileSystemOperationRunner* operation_runner();
 
   // LocalFileSyncStatus::Observer overrides.