Use src-side launcher for telemetry_unittests in chromium_trybot recipe

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

 [
   {
     "cmd": [
       "python",
       "-u",
       "[BUILD]/scripts/slave/bot_update.py",
       "--master",
       "tryserver.chromium.linux",
       "--builder",
       "linux_chromium_rel_swarming",
@@ skipping 95 matching lines @@
       "@@@STEP_LOG_LINE@json.output@    }@@@",
       "@@@STEP_LOG_LINE@json.output@  ]@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
       "@@@STEP_LOG_END@json.output@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
+      "[SLAVE_BUILD]/src/testing/scripts/get_compile_targets.py",
+      "--output",
+      "/path/to/tmp/json",
+      "--",
+      "--build-config-fs",
+      "Release",
+      "--paths",
+      "{\"build\": \"[BUILD]\"}",
+      "--properties",
+      "{\"buildername\": \"linux_chromium_rel_swarming\", \"buildnumber\": 571, \"slavename\": \"TestSlavename\"}"
+    ],
+    "name": "get compile targets for scripts",
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@json.output@{}@@@",
+      "@@@STEP_LOG_END@json.output@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
       "\nimport shutil\nimport sys\nshutil.copy(sys.argv[1], sys.argv[2])\n",
       "[SLAVE_BUILD]/src/testing/buildbot/trybot_analyze_config.json",
       "/path/to/tmp/json"
     ],
     "name": "read filter exclusion spec",
     "~followup_annotations": [
       "@@@STEP_TEXT@path: 'testing/buildbot/trybot_analyze_config.json'@@@",
       "@@@STEP_LOG_LINE@json.output@{@@@",
       "@@@STEP_LOG_LINE@json.output@  \"base\": {@@@",
       "@@@STEP_LOG_LINE@json.output@    \"exclusions\": [@@@",
@@ skipping 187 matching lines @@
       "@@@STEP_LOG_LINE@python.inline@print '*.isolated file for target %s is missing' % sys.argv[1]@@@",
       "@@@STEP_LOG_LINE@python.inline@sys.exit(1)@@@",
       "@@@STEP_LOG_END@python.inline@@@"
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "[SLAVE_BUILD]/src/testing/scripts/checkdeps.py",
+      "--build-config-fs",
+      "Release",
+      "--paths",
+      "{\"build\": \"[BUILD]\"}",
+      "--properties",
+      "{\"buildername\": \"linux_chromium_rel_swarming\", \"buildnumber\": 571, \"slavename\": \"TestSlavename\"}",
       "run",
       "--output",
       "/path/to/tmp/json"
     ],
     "name": "checkdeps (with patch)",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@json.output@{@@@",
       "@@@STEP_LOG_LINE@json.output@  \"failures\": [], @@@",
       "@@@STEP_LOG_LINE@json.output@  \"valid\": true@@@",
       "@@@STEP_LOG_LINE@json.output@}@@@",
@@ skipping 26 matching lines @@
       "--json",
       "/path/to/tmp/json"
     ],
     "name": "checklicenses (with patch)",
     "~followup_annotations": [
       "@@@STEP_LOG_LINE@json.output@[]@@@",
       "@@@STEP_LOG_END@json.output@@@"
     ]
   },
   {
+    "cmd": [
+      "python",
+      "-u",
+      "[SLAVE_BUILD]/src/testing/scripts/telemetry_unittests.py",
+      "--build-config-fs",
+      "Release",
+      "--paths",
+      "{\"build\": \"[BUILD]\"}",
+      "--properties",
+      "{\"buildername\": \"linux_chromium_rel_swarming\", \"buildnumber\": 571, \"slavename\": \"TestSlavename\"}",
+      "run",
+      "--output",
+      "/path/to/tmp/json"
+    ],
+    "name": "telemetry_unittests (with patch)",
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@json.output@{@@@",
+      "@@@STEP_LOG_LINE@json.output@  \"failures\": [], @@@",
+      "@@@STEP_LOG_LINE@json.output@  \"valid\": true@@@",
+      "@@@STEP_LOG_LINE@json.output@}@@@",
+      "@@@STEP_LOG_END@json.output@@@"
+    ]
+  },
+  {
     "allow_subannotations": true,
-    "cmd": [
-      "python",
-      "-u",
-      "[BUILD]/scripts/slave/runtest.py",
-      "--target",
-      "Release",
-      "--xvfb",
-      "--factory-properties",
-      "{\"blamelist\": [\"cool_dev1337@chromium.org\", \"hax@chromium.org\"], \"branch\": \"\", \"build_config\": \"Release\", \"buildername\": \"linux_chromium_rel_swarming\", \"buildnumber\": 571, \"issue\": 12853011, \"mastername\": \"tryserver.chromium.linux\", \"patchset\": 1, \"project\": \"chrome\", \"recipe\": \"chromium_trybot\", \"repository\": \"\", \"requester\": \"commit-bot@chromium.org\", \"revision\": null, \"rietveld\": \"https://codereview.chromium.org\", \"root\": \"src\", \"slavename\": \"TestSlavename\", \"workdir\": \"/path/to/workdir/TestSlavename\"}",
-      "--build-properties",
-      "{\"blamelist\": [\"cool_dev1337@chromium.org\", \"hax@chromium.org\"], \"branch\": \"\", \"build_config\": \"Release\", \"buildername\": \"linux_chromium_rel_swarming\", \"buildnumber\": 571, \"issue\": 12853011, \"mastername\": \"tryserver.chromium.linux\", \"patchset\": 1, \"project\": \"chrome\", \"recipe\": \"chromium_trybot\", \"repository\": \"\", \"requester\": \"commit-bot@chromium.org\", \"revision\": null, \"rietveld\": \"https://codereview.chromium.org\", \"root\": \"src\", \"slavename\": \"TestSlavename\", \"workdir\": \"/path/to/workdir/TestSlavename\"}",
-      "--annotate=gtest",
-      "--test-type=telemetry_unittests",
-      "--builder-name=linux_chromium_rel_swarming",
-      "--slave-name=TestSlavename",
-      "--build-number=571",
-      "--run-python-script",
-      "[SLAVE_BUILD]/src/tools/telemetry/run_tests",
-      "--browser=release",
-      "--retry-limit=3",
-      "--write-full-results-to",
-      "/path/to/tmp/json"
-    ],
-    "name": "telemetry_unittests (with patch)"
-  },
-  {
-    "allow_subannotations": true,
     "cmd": [
       "python",
       "-u",
       "[BUILD]/scripts/slave/runtest.py",
       "--target",
       "Release",
       "--xvfb",
       "--factory-properties",
       "{\"blamelist\": [\"cool_dev1337@chromium.org\", \"hax@chromium.org\"], \"branch\": \"\", \"build_config\": \"Release\", \"buildername\": \"linux_chromium_rel_swarming\", \"buildnumber\": 571, \"issue\": 12853011, \"mastername\": \"tryserver.chromium.linux\", \"patchset\": 1, \"project\": \"chrome\", \"recipe\": \"chromium_trybot\", \"repository\": \"\", \"requester\": \"commit-bot@chromium.org\", \"revision\": null, \"rietveld\": \"https://codereview.chromium.org\", \"root\": \"src\", \"slavename\": \"TestSlavename\", \"workdir\": \"/path/to/workdir/TestSlavename\"}",
       "--build-properties",
@@ skipping 81 matching lines @@
       "@@@STEP_TEXT@TEST RESULTS WERE INVALID@@@",
       "@@@STEP_FAILURE@@@"
     ]
   },
   {
     "name": "$final_result",
     "reason": "Step('browser_tests') failed with return_code 1",
     "status_code": 1
   }
 ]