Re-enable DepsCache using GOMA_DEPS_CACHE_FILE

scripts/slave/recipes/chromium_trybot.expected/swarming_test_failure.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
       "[BUILDER_CACHE]/linux",
       "511"
     ],
     "name": "makedirs checkout path",
@@ skipping 410 matching lines @@
       "--src-dir",
       "[BUILDER_CACHE]/linux/src",
       "--goma-cache-dir",
       "[GOMA_CACHE]",
       "--buildbot-buildername",
       "linux_chromium_rel_ng",
       "--buildbot-mastername",
       "tryserver.chromium.linux",
       "--buildbot-slavename",
       "TestSlavename",
-      "--goma-deps-cache-dir",
-      "[GOMA_DEPS_CACHE]",
+      "--goma-deps-cache-file",
+      "linux_chromium_rel_ng.gomadeps",
       "--compiler",
       "goma",
       "--goma-jsonstatus",
       "/path/to/tmp/json",
       "--goma-service-account-json-file",
       "/creds/service_accounts/service-account-goma-client.json",
       "--goma-dir",
       "[CACHE]/cipd/goma",
       "--goma-fail-fast",
       "--goma-disable-local-fallback",
@@ skipping 367 matching lines @@
       "--src-dir",
       "[BUILDER_CACHE]/linux/src",
       "--goma-cache-dir",
       "[GOMA_CACHE]",
       "--buildbot-buildername",
       "linux_chromium_rel_ng",
       "--buildbot-mastername",
       "tryserver.chromium.linux",
       "--buildbot-slavename",
       "TestSlavename",
-      "--goma-deps-cache-dir",
-      "[GOMA_DEPS_CACHE]",
+      "--goma-deps-cache-file",
+      "linux_chromium_rel_ng.gomadeps",
       "--compiler",
       "goma",
       "--goma-jsonstatus",
       "/path/to/tmp/json",
       "--goma-service-account-json-file",
       "/creds/service_accounts/service-account-goma-client.json",
       "--goma-dir",
       "[CACHE]/cipd/goma",
       "--goma-fail-fast",
       "--goma-disable-local-fallback",
@@ skipping 222 matching lines @@
       "@@@SET_BUILD_PROPERTY@failure_hash@\"2c817ab2d4394c69c9b8a0698b954936d9e1fb76\"@@@"
     ]
   },
   {
     "name": "$result",
     "reason": "1 out of 1 aggregated steps failed. Failures: Step('gl_tests (retry summary)') failed with return_code 1",
     "recipe_result": null,
     "status_code": 1
   }
 ]