In https://codereview.chromium.org/2225683002/ I deleted the only file in chrome/test/android/javatests/src/org/chromium/chrome/test/webapk directory.

The presubmit script complains:

DEBUG:root:GitAffectedFile(chrome/test/android/javatests/src/org/chromium/chrome/test/webapk/TestWebApkServiceImplWrapper.java)
Running presubmit commit checks ...
Traceback (most recent call last):
  File "/b/build/scripts/slave/.recipe_deps/depot_tools/presubmit_support.py", line 1828, in <module>
    sys.exit(main())
  File "/b/build/scripts/slave/.recipe_deps/depot_tools/presubmit_support.py", line 1812, in main
    options.dry_run)
  File "/b/build/scripts/slave/.recipe_deps/depot_tools/presubmit_support.py", line 1531, in DoPresubmitChecks
    change.AbsoluteLocalPaths(True), change.RepositoryRoot())
  File "/b/build/scripts/slave/.recipe_deps/depot_tools/presubmit_support.py", line 1096, in ListRelevantPresubmitFiles
    for f in os.listdir(directory):
OSError: [Errno 2] No such file or directory: '/b/build/slave/linux/build/src/chrome/test/android/javatests/src/org/chromium/chrome/test/webapk'
step returned non-zero exit code: 1
@@@STEP_FAILURE@@@
@@@SET_BUILD_PROPERTY@failure_type@"TEST_FAILURE"@@@
@@@SET_BUILD_PROPERTY@failure_hash@"055d88323f13b6174c79a757eaaf150fa3ef7d2a"@@@