Remove call to IsRunningSequenceOnCurrentThread() in media_file_system_backend.cc

chrome/browser/media_galleries/fileapi/file_path_watcher_util.cc

Index: chrome/browser/media_galleries/fileapi/file_path_watcher_util.cc
diff --git a/chrome/browser/media_galleries/fileapi/file_path_watcher_util.cc b/chrome/browser/media_galleries/fileapi/file_path_watcher_util.cc
index 61d2c57bfcd30c255ebd44a354f8b16d5515f6a7..129cbac2d16058cb095745103d25cfa13e7188c5 100644
--- a/chrome/browser/media_galleries/fileapi/file_path_watcher_util.cc
+++ b/chrome/browser/media_galleries/fileapi/file_path_watcher_util.cc
@@ -50,7 +50,7 @@ void StartFilePathWatchOnMediaTaskRunner(
     const base::FilePath& path,
     const FileWatchStartedCallback& watch_started_callback,
     const base::FilePathWatcher::Callback& path_changed_callback) {
-  DCHECK(MediaFileSystemBackend::CurrentlyOnMediaTaskRunnerThread());
+  MediaFileSystemBackend::AssertCurrentlyOnMediaSequence();
   content::BrowserThread::PostTask(content::BrowserThread::FILE,
                                    FROM_HERE,
                                    base::Bind(&StartFilePathWatchOnFileThread,