Add cast_alsa_cma_backend_unittests to buildbot

chromecast/media/media.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
     'chromecast_branding%': 'public',
     'use_alsa%': 0,
 
@@ skipping 429 matching lines @@
         # NOTE: can't depend on media_base because that pulls in libcast_media.
         '<(DEPTH)/chromecast/media/base/media_caps.cc',
         '<(DEPTH)/chromecast/media/base/media_caps.h',
       ],
     },  # end of target 'libcast_media_1.0_audio'
   ],  # end of targets
   'conditions': [
     ['use_alsa==1', {
       'targets': [
         {
-          'target_name': 'alsa_cma_backend_unittests',
+          'target_name': 'cast_alsa_cma_backend_unittests',
           'type': '<(gtest_target_type)',
           'dependencies': [
             'alsa_cma_backend',
             '<(DEPTH)/base/base.gyp:run_all_unittests',
             '<(DEPTH)/testing/gmock.gyp:gmock',
             '<(DEPTH)/testing/gtest.gyp:gtest',
            ],
           'sources': [
             'cma/backend/alsa/mock_alsa_wrapper.cc',
             'cma/backend/alsa/mock_alsa_wrapper.h',
             'cma/backend/alsa/stream_mixer_alsa_unittest.cc',
           ],
-        },  # end of target 'alsa_cma_backend_unittests'
+        },  # end of target 'cast_alsa_cma_backend_unittests'
       ],  # end of targets
     }],
   ],  # end of conditions
 }