2 files changed, 7 insertions, 0 deletions
diff --git a/ppapi/cpp/file_system.cc b/ppapi/cpp/file_system.cc
index b5ee1f3..8499dfd 100644
--- a/ppapi/cpp/file_system.cc
+++ b/ppapi/cpp/file_system.cc
@@ -21,6 +21,9 @@ template <> const char* interface_name<PPB_FileSystem>() {
 
 }  // namespace
 
+FileSystem::FileSystem() {
+}
+
 FileSystem::FileSystem(Instance* instance,
                        PP_FileSystemType type) {
   if (!has_interface<PPB_FileSystem>())
diff --git a/ppapi/cpp/file_system.h b/ppapi/cpp/file_system.h
index 1c213d6..fc789359 100644
--- a/ppapi/cpp/file_system.h
+++ b/ppapi/cpp/file_system.h
@@ -26,6 +26,10 @@ class FileRef;
 /// associated with a file.
 class FileSystem : public Resource {
  public:
+  /// Constructs an is_null() filesystem resource. If you use this constructor,
+  /// you will have to assign it to a "real" FileSystem object before you can
+  /// use it.
+  FileSystem();
 
   /// This constructor creates a file system object of the given type.
   ///