I missed an infra_step, pushing directories.

infra/bots/recipe_modules/flavor/gn_android_flavor.py

 # 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.
 
 import default_flavor
 import subprocess
 
 """GN Android flavor utils, used for building Skia for Android with GN."""
 class GNAndroidFlavorUtils(default_flavor.DefaultFlavorUtils):
   def __init__(self, m):
@@ skipping 100 matching lines @@
     device = sys.argv[2]
     for d, _, fs in os.walk(host):
       p = os.path.relpath(d, host)
       if p != '.' and p.startswith('.'):
         continue
       for f in fs:
         print os.path.join(p,f)
         subprocess.check_call(['adb', 'push',
                                os.path.realpath(os.path.join(host, p, f)),
                                os.path.join(device, p, f)])
-    """, args=[host, device], cwd=self.m.vars.skia_dir)
+    """, args=[host, device], cwd=self.m.vars.skia_dir, infra_step=True)
 
   def copy_directory_contents_to_host(self, device, host):
     self._adb('pull %s %s' % (device, host), 'pull', device, host)
 
   def read_file_on_device(self, path):
     return self._adb('read %s' % path,
                      'shell', 'cat', path, stdout=self.m.raw_io.output()).stdout
 
   def remove_file_on_device(self, path):
     self._adb('rm %s' % path, 'shell', 'rm', '-f', path)
 
   def create_clean_device_dir(self, path):
     self._adb('rm %s' % path, 'shell', 'rm', '-rf', path)
     self._adb('mkdir %s' % path, 'shell', 'mkdir', '-p', path)