[Android] With gyp_managed_install no device is only a warning

build/android/gyp/create_device_library_links.py

 #!/usr/bin/env python
 #
 # Copyright 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.
 
 """Creates symlinks to native libraries for an APK.
 
 The native libraries should have previously been pushed to the device (in
 options.target_dir). This script then creates links in an apk's lib/ folder to
@@ skipping 58 matching lines @@
       '. %(script_device_path)s'
       ) % {
           'apk_libraries_dir': apk_libraries_dir,
           'target_dir': options.target_dir,
           'script_device_path': options.script_device_path
           }
   RunShellCommand(adb, trigger_cmd)
 
 
 def main(argv):
+  if not build_utils.IsDeviceReady():
+    build_utils.PrintBigWarning(
+        'Zero (or multiple) devices attached. Skipping creating symlinks.')
+    return
+
   parser = optparse.OptionParser()
   parser.add_option('--apk', help='Path to the apk.')
   parser.add_option('--script-host-path',
       help='Path on the host for the symlink script.')
   parser.add_option('--script-device-path',
       help='Path on the device to push the created symlink script.')
   parser.add_option('--libraries-json',
       help='Path to the json list of native libraries.')
   parser.add_option('--target-dir',
       help='Device directory that contains the target libraries for symlinks.')
   parser.add_option('--stamp', help='Path to touch on success.')
   options, _ = parser.parse_args()
 
   required_options = ['apk', 'libraries_json', 'script_host_path',
       'script_device_path', 'target_dir']
   build_utils.CheckOptions(options, parser, required=required_options)
 
   CreateSymlinkScript(options)
   TriggerSymlinkScript(options)
 
   if options.stamp:
     build_utils.Touch(options.stamp)
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))