Add both node paths to both Polymer steps.

scripts/slave/recipes/polymer.py

 # Copyright (c) 2013 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.
 
 
 DEPS = [
   'gclient',
   'git',
   'path',
   'platform',
@@ skipping 44 matching lines @@
   yield _CheckoutSteps(api)
 
   tmp_path = ''
   tmp_args = []
   if not api.platform.is_win:
     tmp_path = api.path.slave_build('.tmp')
     yield api.step('mktmp', ['mkdir', '-p', tmp_path])
     tmp_args = ['--tmp', tmp_path]
 
   cmd_suffix = ''
-  npm_env = grunt_env = {}
+  node_env = {}
   if api.platform.is_win:
     cmd_suffix = '.cmd'
-    npm_env = {'PATH': r'C:\Program Files (x86)\nodejs;%(PATH)s'}
-    grunt_env = {'PATH': r'C:\Users\chrome-bot\AppData\Roaming\npm;%(PATH)s'}
+    node_env = {'PATH': r'C:\Program Files (x86)\nodejs;'
+                        r'C:\Users\chrome-bot\AppData\Roaming\npm;'
+                        r'%(PATH)s'}
 
   test_prefix = []
   if api.platform.is_linux:
     test_prefix = ['xvfb-run']
 
   yield api.step('update-install', ['npm' + cmd_suffix, 'install'] + tmp_args,
-                 cwd=api.path.checkout(), env=npm_env)
+                 cwd=api.path.checkout(), env=node_env)
 
   yield api.step('test', test_prefix + ['grunt' + cmd_suffix, 'test-buildbot'],
-                 cwd=api.path.checkout(), env=grunt_env,
+                 cwd=api.path.checkout(), env=node_env,
                  allow_subannotations=True)
 
 
 def GenTests(api):
   for plat in ('mac', 'linux', 'win'):
     yield 'polymer-%s' % plat, {
       'properties': api.properties_scheduled(
           repository='https://github.com/Polymer/polymer'),
       'mock': {
         'platform': {
             'name': plat
         }
       },
     }