Provide a way to suppress implicit MIDL generation rules for actions

test/win/idl-rules/idl_compiler.py

Index: test/win/idl-rules/idl_compiler.py
diff --git a/test/win/idl-rules/idl_compiler.py b/test/win/idl-rules/idl_compiler.py
new file mode 100644
index 0000000000000000000000000000000000000000..a5a2ad04708ed8a7633cd72b09b9f15337e65363
--- /dev/null
+++ b/test/win/idl-rules/idl_compiler.py
@@ -0,0 +1,17 @@
+#!/usr/bin/env python
+
+# Copyright (c) 2014 Google Inc. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# mock, just outputs empty .h/.cpp files
+
+import os
+import sys
+
+if len(sys.argv) == 2:
+  basename, ext = os.path.splitext(sys.argv[1])
+  with open('%s.h' % basename, 'w') as f:
+    f.write('// %s.h\n' % basename)
+  with open('%s.cpp' % basename, 'w') as f:
+    f.write('// %s.cpp\n' % basename)