Compile braille ime among other compiled js resources.

chrome/browser/resources/chromeos/braille_ime/check_braille_ime.py

 #!/usr/bin/env python
 
 # Copyright 2014 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.
 
 '''Uses the closure compiler to check the braille ime.'''
 
 import os
 import sys
 
 
 _SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
 
 sys.path.insert(0, os.path.join(_SCRIPT_DIR, '..', 'chromevox', 'tools'))
 from jscompilerwrapper import RunCompiler
 
 
+_CHROME_SOURCE_DIR = os.path.normpath(
+    os.path.join(_SCRIPT_DIR, *[os.path.pardir] * 5))
+
+
 def CheckBrailleIme():
   print 'Compiling braille IME.'
   js_files = [
-      os.path.join(_SCRIPT_DIR, 'main.js'),
-      os.path.join(_SCRIPT_DIR, 'braille_ime.js')]
-  externs = [os.path.join(_SCRIPT_DIR, 'externs.js')]
+      os.path.join(_SCRIPT_DIR, 'braille_ime.js'),
+      os.path.join(_SCRIPT_DIR, 'main.js')]
+  externs = [
+      os.path.join(
+          _CHROME_SOURCE_DIR,
+          'third_party/closure_compiler/externs/chrome_extensions.js'),
+      os.path.join(_SCRIPT_DIR, 'externs.js')]
   return RunCompiler(js_files, externs)
 
 
 def main():
   success, output = CheckBrailleIme()
   if len(output) > 0:
     print output
   return int(not success)
 
 
 if __name__ == '__main__':
   sys.exit(main())