Update idlsync.py to pull in dependencies required for chrome api generation.

third_party/chrome/tools/test/idl_object_types.idl

Index: third_party/chrome/tools/test/idl_object_types.idl
diff --git a/third_party/chrome/tools/test/idl_object_types.idl b/third_party/chrome/tools/test/idl_object_types.idl
deleted file mode 100644
index fd416cedfe9a05aa1165bd072220043d21ca4640..0000000000000000000000000000000000000000
--- a/third_party/chrome/tools/test/idl_object_types.idl
+++ /dev/null
@@ -1,22 +0,0 @@
-// 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.
-
-// Tests 'object' types in various places in IDL.
-
-namespace idl_object_types {
-  dictionary FooType {
-    long x;
-    object y;
-    [instanceOf=Window]object z;
-  };
-
-  dictionary BarType {
-    any x;
-  };
-
-  interface Functions {
-    static void objectFunction1([instanceOf=ImageData]object icon);
-    static void objectFunction2(any some_arg);
-  };
-};