LocalFileSystem::deleteFileSystem() is no longer used.

content/browser/fileapi/fileapi_message_filter.h

Index: content/browser/fileapi/fileapi_message_filter.h
diff --git a/content/browser/fileapi/fileapi_message_filter.h b/content/browser/fileapi/fileapi_message_filter.h
index c49aca69215cfb6cc6acab0f3b4fe2e61cc1e7ca..ea4215fa8ca41860fa3dbf8cbf634287fbbab2e8 100644
--- a/content/browser/fileapi/fileapi_message_filter.h
+++ b/content/browser/fileapi/fileapi_message_filter.h
@@ -90,9 +90,6 @@ class CONTENT_EXPORT FileAPIMessageFilter : public BrowserMessageFilter {
                         storage::FileSystemType type);
   void OnResolveURL(int request_id,
                     const GURL& filesystem_url);
-  void OnDeleteFileSystem(int request_id,
-                          const GURL& origin_url,
-                          storage::FileSystemType type);
   void OnMove(int request_id,
               const GURL& src_path,
               const GURL& dest_path);
@@ -168,8 +165,6 @@ class CONTENT_EXPORT FileAPIMessageFilter : public BrowserMessageFilter {
                      const storage::FileSystemInfo& info,
                      const base::FilePath& file_path,
                      storage::FileSystemContext::ResolvedEntryType type);
-  void DidDeleteFileSystem(int request_id,
-                           base::File::Error result);
   void DidCreateSnapshot(
       int request_id,
       const storage::FileSystemURL& url,