Remove BrowserFileSystemContext class (merge into SandboxedFSContext)

chrome/browser/file_system/browser_file_system_helper.cc

Index: chrome/browser/file_system/browser_file_system_helper.cc
diff --git a/chrome/browser/file_system/browser_file_system_helper.cc b/chrome/browser/file_system/browser_file_system_helper.cc
new file mode 100644
index 0000000000000000000000000000000000000000..2ce4f3641cdd684e177d545d37f7aa75c852bdf9
--- /dev/null
+++ b/chrome/browser/file_system/browser_file_system_helper.cc
@@ -0,0 +1,23 @@
+// Copyright (c) 2010 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 "chrome/browser/file_system/browser_file_system_helper.h"
+
+#include "base/file_path.h"
+#include "base/command_line.h"
+#include "chrome/browser/browser_thread.h"
+#include "chrome/common/chrome_switches.h"
+
+scoped_refptr<fileapi::SandboxedFileSystemContext> CreateFileSystemContext(
+        const FilePath& profile_path, bool is_incognito) {
+  return new fileapi::SandboxedFileSystemContext(
+      BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE),
+      BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO),
+      profile_path,
+      is_incognito,
+      CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kAllowFileAccessFromFiles),
+      CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kUnlimitedQuotaForFiles));
+}