[NaCl SDK] Refactor FakeFileRefInterface.

native_client_sdk/src/tests/nacl_io_test/fake_ppapi/fake_util.h

Index: native_client_sdk/src/tests/nacl_io_test/fake_ppapi/fake_util.h
diff --git a/native_client_sdk/src/tests/nacl_io_test/fake_ppapi/fake_util.h b/native_client_sdk/src/tests/nacl_io_test/fake_ppapi/fake_util.h
index 832bc450a54de6eedf43826e4d047415f7526e17..11e6103e11626f298d51737830364dfa9855ccf9 100644
--- a/native_client_sdk/src/tests/nacl_io_test/fake_ppapi/fake_util.h
+++ b/native_client_sdk/src/tests/nacl_io_test/fake_ppapi/fake_util.h
@@ -22,6 +22,16 @@ class FakeFileRefResource : public FakeResource {
   std::string contents;
 };
 
+class FakeFileSystemResource : public FakeResource {
+ public:
+  FakeFileSystemResource() : filesystem(NULL), opened(false) {}
+  ~FakeFileSystemResource() { delete filesystem; }
+  static const char* classname() { return "FakeFileSystemResource"; }
+
+  FakeHtml5FsFilesystem* filesystem;  // Owned.
+  bool opened;
+};
+
 int32_t RunCompletionCallback(PP_CompletionCallback* callback, int32_t result);
 
 #endif  // LIBRARIES_NACL_IO_TEST_FAKE_UTIL_H_