Extract external file systems handling from isolated context.

webkit/fileapi/mount_points.cc

Index: webkit/fileapi/mount_points.cc
diff --git a/webkit/fileapi/mount_points.cc b/webkit/fileapi/mount_points.cc
new file mode 100644
index 0000000000000000000000000000000000000000..35e7626fafeaf3a8a51d9ab41353a5812e9652bd
--- /dev/null
+++ b/webkit/fileapi/mount_points.cc
@@ -0,0 +1,22 @@
+// Copyright (c) 2012 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 "webkit/fileapi/mount_points.h"
+
+#include "webkit/fileapi/file_system_types.h"
+
+namespace fileapi {
+
+MountPoints::MountPointInfo::MountPointInfo() {}
+MountPoints::MountPointInfo::MountPointInfo(
+    const std::string& name, const FilePath& path)
+    : name(name), path(path) {}
+
+// static
+bool MountPoints::HasMountPointsImplementation(FileSystemType type) {
+  return type == kFileSystemTypeIsolated ||
+         type == kFileSystemTypeExternal;
+}
+
+}  // namespace fileapi