Remove duplicate application cpp files in mojo/application.

build/gn_migration.gypi

 # Copyright (c) 2015 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.
 
 # This file defines five targets that we are using to track the progress of the
 # GYP->GN migration:
 #
 # 'both_gn_and_gyp' lists what GN is currently capable of building and should
 # match the 'both_gn_and_gyp' target in //BUILD.gn.
 #
@@ skipping 90 matching lines @@
         '../jingle/jingle.gyp:jingle_unittests',
         '../media/media.gyp:ffmpeg_regression_tests',  # TODO(GYP) this should be conditional on media_use_ffmpeg
         '../media/media.gyp:media_perftests',
         '../media/media.gyp:media_unittests',
         '../media/midi/midi.gyp:midi_unittests',
         '../media/cast/cast.gyp:cast_benchmarks',
         '../media/cast/cast.gyp:cast_unittests',
         '../media/cast/cast.gyp:generate_barcode_video',
         '../media/cast/cast.gyp:generate_timecode_audio',
         '../mojo/mojo.gyp:mojo',
-        '../mojo/mojo_base.gyp:mojo_application_chromium',
+        '../mojo/mojo_base.gyp:mojo_application_base',
         '../mojo/mojo_base.gyp:mojo_common_unittests',
         '../net/net.gyp:crash_cache',
         '../net/net.gyp:crl_set_dump',
         '../net/net.gyp:dns_fuzz_stub',
         '../net/net.gyp:dump_cache',
         '../net/net.gyp:gdig',
         '../net/net.gyp:get_server_time',
         '../net/net.gyp:hpack_example_generator',
         '../net/net.gyp:hpack_fuzz_mutator',
         '../net/net.gyp:hpack_fuzz_wrapper',
@@ skipping 551 matching lines @@
           'dependencies': [
             # TODO(GYP): All of these targets need to be ported over.
             '../components/components.gyp:policy_win64',
           ]
         }],
       ],
     },
   ]
 }