fileapi: Add modification time check for FileSystemFileStreamReader

webkit/chromeos/fileapi/cros_mount_point_provider.cc

Index: webkit/chromeos/fileapi/cros_mount_point_provider.cc
diff --git a/webkit/chromeos/fileapi/cros_mount_point_provider.cc b/webkit/chromeos/fileapi/cros_mount_point_provider.cc
index 978eb111d49aa521a60c120472480404a7f0e4f4..2d0c12e1c30ee429fdb9305a46398df380ad31a9 100644
--- a/webkit/chromeos/fileapi/cros_mount_point_provider.cc
+++ b/webkit/chromeos/fileapi/cros_mount_point_provider.cc
@@ -270,11 +270,13 @@ fileapi::FileSystemOperation* CrosMountPointProvider::CreateFileSystemOperation(
 webkit_blob::FileStreamReader* CrosMountPointProvider::CreateFileStreamReader(
     const fileapi::FileSystemURL& url,
     int64 offset,
+    const base::Time& expected_modification_time,
     fileapi::FileSystemContext* context) const {
   // For now we return a generic Reader implementation which utilizes
   // CreateSnapshotFile internally (i.e. will download everything first).
   // TODO(satorux,zel): implement more efficient reader for remote cases.
-  return new fileapi::FileSystemFileStreamReader(context, url, offset);
+  return new fileapi::FileSystemFileStreamReader(
+      context, url, offset, expected_modification_time);
 }
 
 fileapi::FileStreamWriter* CrosMountPointProvider::CreateFileStreamWriter(