Move Android Nexus 9 GPU bot to chromium.gpu.fyi waterfall.

tests/masters_recipes_test.py

 #!/usr/bin/env python
 # 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.
 
 import argparse
 import json
 import os
 import subprocess
 import sys
@@ skipping 29 matching lines @@
         'Google Chrome Linux x64',
         'Google Chrome Mac',
         'Google Chrome Win',
     ],
     'master.chromium.chromiumos': [
         'Linux ChromiumOS Full',
     ],
     'master.chromium.gpu': [
         'Android Debug (Nexus 5)',
         'Android Debug (Nexus 6)',
-        'Android Debug (Nexus 9)',
         'GPU Linux Builder (dbg)',
         'GPU Mac Builder (dbg)',
         'GPU Win Builder (dbg)',
         'Linux Debug (NVIDIA)',
         'Mac 10.10 Debug (Intel)',
         'Mac Retina Debug',
         'Mac 10.10 Retina Debug (AMD)',
         'Mac 10.10 Retina Release (AMD)',
         'Win7 Debug (NVIDIA)',
     ],
@@ skipping 176 matching lines @@
     exit_code = 1
     print 'Unused suppressions:'
     print '\n'.join(sorted(
         '\t%s:%s' % (b[0], b[1]) for b in unused_suppressions))
 
   return exit_code
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv[1:]))