build: roll infra_paths changes

scripts/slave/recipes/libvpx/unittests.py

 # 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.
 
 DEPS = [
     'depot_tools/git',
+    'depot_tools/infra_paths',
     'recipe_engine/path',
     'recipe_engine/platform',
     'recipe_engine/properties',
     'recipe_engine/python',
     'recipe_engine/step',
 ]
 
 # TODO (joshualitt) the configure script is messed up so we need a relative
 # path.  Essentially, it must be using argv[0] when invoking some of the
 # scripts in the libvpx directory
 CONFIGURE_PATH_REL = './libvpx/configure'
 
 def RunSteps(api):
   # Paths and other constants
-  build_root = api.path['slave_build']
+  build_root = api.infra_paths['slave_build']
 
   # libvpx paths
   libvpx_git_url = api.properties['libvpx_git_url']
   libvpx_root = build_root.join('libvpx')
 
   api.python.inline(
       'clean_build', r"""
           import os, sys, shutil
           root = sys.argv[1]
           nuke_dirs = sys.argv[2:]
@@ skipping 13 matching lines @@
 
   api.step('run tests', ['make', 'test', '-j8'])
 
 def GenTests(api):
   # Right now we just support linux, but one day we will have mac and windows
   # as well
   yield (
     api.test('basic_linux_64') +
     api.properties(
         libvpx_git_url='https://chromium.googlesource.com/webm/libvpx'))