DevTools: Update devtools recipe with tryserver logic

scripts/slave/recipes/devtools.expected/devtools_fyi_main.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[depot_tools::bot_update]/resources/bot_update.py",
       "--master",
       "chromium.fyi",
       "--builder",
       "Chromium DevTools Linux",
@@ skipping 88 matching lines @@
       "@@@SET_BUILD_PROPERTY@got_v8_revision_cp@\"refs/heads/master@{#43426}\"@@@",
       "@@@SET_BUILD_PROPERTY@got_swarming_client_revision_cp@\"refs/heads/master@{#276089}\"@@@",
       "@@@SET_BUILD_PROPERTY@got_webrtc_revision_cp@\"refs/heads/master@{#120644}\"@@@",
       "@@@SET_BUILD_PROPERTY@got_revision_cp@\"refs/heads/master@{#170242}\"@@@",
       "@@@SET_BUILD_PROPERTY@got_angle_revision_cp@\"refs/heads/master@{#297276}\"@@@",
       "@@@SET_BUILD_PROPERTY@got_buildtools_revision@\"f0319a328b2809876916353cb994259692140934\"@@@"
     ]
   },
   {
     "cmd": [
-      "git",
-      "diff",
-      "--cached",
-      "--name-only"
-    ],
-    "cwd": "[SLAVE_BUILD]/src",
-    "name": "git diff to analyze patch",
-    "stdout": "/path/to/tmp/",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@files@third_party/WebKit/Source/devtools/fake.js@@@",
-      "@@@STEP_LOG_END@files@@@"
-    ]
-  },
-  {
-    "cmd": [
       "python",
       "-u",
-      "[SLAVE_BUILD]/src/third_party/WebKit/Source/devtools/scripts/buildbot/npm.py",
+      "[SLAVE_BUILD]/src/third_party/WebKit/Source/devtools/scripts/buildbot/node.py",
       "--version"
     ],
     "name": "install node.js and npm"
   },
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[depot_tools::git]/resources/git_setup.py",
       "--path",
       "[SLAVE_BUILD]/src/third_party/WebKit/Source/devtools/npm_modules",
       "--url",
       "https://chromium.googlesource.com/deps/third_party/npm_modules"
     ],
     "name": "git setup"
   },
   {
     "cmd": [
       "git",
       "retry",
       "fetch",
-      "origin",
-      "master"
+      "origin"
     ],
     "cwd": "[SLAVE_BUILD]/src/third_party/WebKit/Source/devtools/npm_modules",
     "env": {
       "PATH": "RECIPE_PACKAGE_REPO[depot_tools]:%(PATH)s"
     },
     "name": "git fetch"
   },
   {
     "cmd": [
       "git",
       "checkout",
       "-f",
-      "FETCH_HEAD"
+      "8451e3a3fae09eaa18ddeed0c069a8e2f0e3541c"
     ],
     "cwd": "[SLAVE_BUILD]/src/third_party/WebKit/Source/devtools/npm_modules",
     "name": "git checkout"
   },
   {
     "cmd": [
       "git",
       "rev-parse",
       "HEAD"
     ],
@@ skipping 32 matching lines @@
       "--init",
       "--recursive"
     ],
     "cwd": "[SLAVE_BUILD]/src/third_party/WebKit/Source/devtools/npm_modules",
     "name": "submodule update"
   },
   {
     "cmd": [
       "python",
       "-u",
-      "RECIPE_MODULE[recipe_engine::shutil]/resources/rmtree.py",
-      "[SLAVE_BUILD]/src/third_party/WebKit/Source/devtools/node_modules"
-    ],
-    "name": "rmtree [SLAVE_BUILD]/src/third_party/WebKit/Source/devtools/node_modules"
-  },
-  {
-    "cmd": [
-      "python",
-      "-u",
-      "\nimport shutil\nimport sys\nshutil.copytree(sys.argv[1], sys.argv[2], symlinks=bool(sys.argv[3]))\n",
-      "[SLAVE_BUILD]/src/third_party/WebKit/Source/devtools/npm_modules/devtools/node_modules",
-      "[SLAVE_BUILD]/src/third_party/WebKit/Source/devtools/node_modules",
-      "0"
-    ],
-    "name": "copy npm modules"
-  },
-  {
-    "cmd": [
-      "python",
-      "-u",
-      "[SLAVE_BUILD]/src/third_party/WebKit/Source/devtools/scripts/buildbot/npm.py",
-      "run",
-      "lint"
+      "[SLAVE_BUILD]/src/third_party/WebKit/Source/devtools/scripts/buildbot/node.py",
+      "[SLAVE_BUILD]/src/third_party/WebKit/Source/devtools/npm_modules/node_modules/.bin/eslint",
+      "-c",
+      "front_end/.eslintrc.js",
+      "--ignore-path",
+      "front_end/.eslintignore",
+      "front_end"
     ],
     "cwd": "[SLAVE_BUILD]/src/third_party/WebKit/Source/devtools",
     "name": "run eslint"
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]