[Telemetry] Make StartVideoCapture start capturing synchronously.

build/android/screenshot.py

 #!/usr/bin/env python
 
 # Copyright (c) 2012 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.
 
 """Takes a screenshot or a screen video capture from an Android device."""
 
 import logging
 import optparse
@@ skipping 59 matching lines @@
   if options.verbose:
     logging.getLogger().setLevel(logging.DEBUG)
 
   if not options.device and len(android_commands.GetAttachedDevices()) > 1:
     parser.error('Multiple devices are attached. '
                  'Please specify device serial number with --device.')
 
   if len(args) > 1:
     parser.error('Too many positional arguments.')
   host_file = args[0] if args else options.file
-  adb = android_commands.AndroidCommands(options.device)
+  adb = android_commands.AndroidCommands(options.device, api_strict_mode=True)
 
   if options.video:
     _CaptureVideo(adb, host_file, options)
   else:
     _CaptureScreenshot(adb, host_file)
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main())