Convert chrome_elf_unittests to run exclusively on Swarming

0 configs already ran on Swarming
20 used to run locally and were converted:
- chromium.fyi.json: Chromium Win 10
- chromium.fyi.json: ClangToTWin tester
- chromium.fyi.json: ClangToTWin(dbg) tester
- chromium.fyi.json: ClangToTWin(dll) tester
- chromium.fyi.json: ClangToTWin64 tester
- chromium.fyi.json: ClangToTWin64(dbg) tester
- chromium.fyi.json: ClangToTWin64(dll) tester
- chromium.fyi.json: CrWinAsan tester
- chromium.fyi.json: CrWinAsan(dll) tester
- chromium.fyi.json: CrWinAsanCov tester
- chromium.fyi.json: CrWinClang tester
- chromium.fyi.json: CrWinClang(dbg) tester
- chromium.fyi.json: CrWinClang(shared) tester
- chromium.fyi.json: CrWinClang64 tester
- chromium.fyi.json: CrWinClang64(dbg) tester
- chromium.fyi.json: CrWinClang64(dll) tester
- chromium.fyi.json: CrWinClangLLD tester
- chromium.win.json: Win 7 Tests x64 (1)
- chromium.win.json: Win7 Tests (1)
- chromium.win.json: Win7 Tests (dbg)(1)

Ran:
  ./manage.py --convert chrome_elf_unittests

BUG=98637
TBR=caitkp

Review URL: https://codereview.chromium.org/1223703002

Cr-Commit-Position: refs/heads/master@{#375581}
6 files changed