Add a instance groups to Connect(), and introduce an Identity struct.

components/filesystem/file_system_impl.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/filesystem/file_system_impl.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_file.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "build/build_config.h"
 #include "components/filesystem/directory_impl.h"
 #include "mojo/shell/public/cpp/connection.h"
 #include "url/gurl.h"
 
 namespace filesystem {
 
 FileSystemImpl::FileSystemImpl(mojo::Connection* connection,
                                mojo::InterfaceRequest<FileSystem> request,
                                base::FilePath persistent_dir,
                                LockTable* lock_table)
-    : remote_application_name_(connection->GetRemoteApplicationName()),
+    : remote_application_name_(connection->GetRemoteIdentity().name()),
       binding_(this, std::move(request)),
       lock_table_(lock_table),
       persistent_dir_(persistent_dir) {}
 
 FileSystemImpl::~FileSystemImpl() {
 }
 
 void FileSystemImpl::OpenTempDirectory(
     mojo::InterfaceRequest<Directory> directory,
     const OpenTempDirectoryCallback& callback) {
@@ skipping 14 matching lines @@
   base::FilePath path = persistent_dir_;
   if (!base::PathExists(path))
     base::CreateDirectory(path);
 
   new DirectoryImpl(
       std::move(directory), path, std::move(temp_dir), lock_table_);
   callback.Run(FileError::OK);
 }
 
 }  // namespace filesystem