Fix create_include_gyp.py to support relative paths to include_js.gypi

third_party/closure_compiler/tools/create_include_gyp.py

 #!/usr/bin/env python
 # Copyright 2016 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.
 #
 # Usage:
 #
 #   cd third_party/closure_compiler
 #   tools/create_include_gyp.py externs > externs/compiled_resources2.gyp
 #   tools/create_include_gyp.py interfaces > interfaces/compiled_resources2.gyp
 
 from datetime import date
 import os
 import sys
 
 
+_INCLUDE_GYPI = os.path.join(os.path.dirname(__file__), '..', 'include_js.gypi')
+
+
 _INCLUDE_TEMPLATE = """
 # Copyright %d 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.
 
 ########################################################
 #    NOTE: THIS FILE IS GENERATED. DO NOT EDIT IT!     #
 # Instead, run create_include_gyp.py to regenerate it. #
 ########################################################
 {
   'targets': [
     %s,
   ],
 }""".lstrip()
 
 
 _TARGET_TEMPLATE = """
     {
       'target_name': '%s',
-      'includes': ['../include_js.gypi'],
+      'includes': ['%s'],
     }"""
 
 
 def CreateIncludeGyp(directory):
-  include_dir = os.path.join(os.path.dirname(__file__), "..", directory)
-  include_files = [f for f in os.listdir(include_dir) if f.endswith('.js')]
-  include_files.sort()
-  targets = [_TARGET_TEMPLATE % f[:-3] for f in include_files]
+  include_path = os.path.normpath(os.path.relpath(_INCLUDE_GYPI, directory))
+  js_files = [f for f in os.listdir(directory) if f.endswith('.js')]
+  js_files.sort()
+  targets = [_TARGET_TEMPLATE % (f[:-3], include_path) for f in js_files]
   return _INCLUDE_TEMPLATE % (date.today().year, ",".join(targets).strip())
 
 
 def ShowUsageAndDie():
   print "usage: tools/create_include_gyp.py externs/ > externs/compiled_resources2.gyp"
   sys.exit(1)
 
 
 if __name__ == "__main__":
   if len(sys.argv) != 2:
     ShowUsageAndDie()
 
   print CreateIncludeGyp(sys.argv[1])