Convert remoting_unittests to run exclusively on Swarming

0 configs already ran on Swarming
28 used to run locally and were converted:
- chromium.chromiumos.json: Linux ChromiumOS Ozone Tests (1)
- chromium.chromiumos.json: Linux ChromiumOS Tests (1)
- chromium.chromiumos.json: Linux ChromiumOS Tests (dbg)(1)
- chromium.fyi.json: CrWinAsan tester
- chromium.fyi.json: CrWinAsan(dll) tester
- chromium.fyi.json: Linux Trusty
- chromium.fyi.json: Linux Trusty (dbg)
- chromium.linux.json: Linux Tests
- chromium.linux.json: Linux Tests (dbg)(1)
- chromium.linux.json: Linux Tests (dbg)(1)(32)
- chromium.mac.json: Mac10.10 Tests
- chromium.mac.json: Mac10.6 Tests
- chromium.mac.json: Mac10.8 Tests
- chromium.mac.json: Mac10.9 Tests
- chromium.mac.json: Mac10.9 Tests (dbg)
- chromium.memory.fyi.json: Linux ChromeOS MSan Tests
- chromium.memory.fyi.json: Linux MSan Tests
- chromium.memory.fyi.json: Linux TSan Tests
- chromium.memory.json: Linux ASan LSan Tests (1)
- chromium.memory.json: Linux Chromium OS ASan LSan Tests (1)
- chromium.memory.json: Mac ASan 64 Tests (1)
- chromium.webkit.json: Linux ChromiumOS Tests (1)
- chromium.webkit.json: Linux ChromiumOS Tests (dbg)(1)
- chromium.win.json: Vista Tests (1)
- chromium.win.json: Win 7 Tests x64 (1)
- chromium.win.json: Win7 Tests (1)
- chromium.win.json: Win7 Tests (dbg)(1)
- chromium.win.json: XP Tests (1)

Ran:
  ./manage.py --convert remoting_unittests

R=lambroslambrou@chromium.org,dpranke@chromium.org
TBR=
BUG=98637

Review URL: https://codereview.chromium.org/1216033005

Cr-Original-Commit-Position: refs/heads/master@{#336931}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: f25c68c20a42a05981410fd9159cebe162ff7865

gn_migration.gypi

@@ -538,6 +538,7 @@
             '../media/midi/midi.gyp:midi_unittests_run',
             '../net/net.gyp:net_unittests_run',
             '../printing/printing.gyp:printing_unittests_run',
+            '../remoting/remoting.gyp:remoting_unittests_run',
             '../skia/skia_tests.gyp:skia_unittests_run',
             '../sql/sql.gyp:sql_unittests_run',
             '../sync/sync.gyp:sync_unit_tests_run',