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

third_party/chrome/tools/test/idl_reserved_words.idl

Index: third_party/chrome/tools/test/idl_reserved_words.idl
diff --git a/third_party/chrome/tools/test/idl_reserved_words.idl b/third_party/chrome/tools/test/idl_reserved_words.idl
deleted file mode 100644
index 61ddabd48a5d17bebd9474b95b7f7211d2b6e422..0000000000000000000000000000000000000000
--- a/third_party/chrome/tools/test/idl_reserved_words.idl
+++ /dev/null
@@ -1,25 +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.
-
-namespace reserved_words {
-
-  enum Foo { _float, _DOMString };
-
-  enum _enum {
-    _callback,
-    _namespace
-  };
-
-  dictionary _dictionary {
-    long _long;
-  };
-
-  dictionary MyType {
-    DOMString _interface;
-  };
-
-  interface Functions {
-    static void _static(Foo foo, _enum e);
-  };
-};