DevTools: Add support for installing node and running eslint over devtools.

third_party/WebKit/Source/devtools/BUILD.gn

Index: third_party/WebKit/Source/devtools/BUILD.gn
diff --git a/third_party/WebKit/Source/devtools/BUILD.gn b/third_party/WebKit/Source/devtools/BUILD.gn
index afc584467c07fb80ec6dae4a361bc0acf3d5f4b4..5df790739d753b94c4c8437e0ff978ad4a2c9036 100644
--- a/third_party/WebKit/Source/devtools/BUILD.gn
+++ b/third_party/WebKit/Source/devtools/BUILD.gn
@@ -1176,10 +1176,25 @@ group("devtools_closure_compile") {
     "scripts/compile_frontend.py",
     "scripts/jsdoc_validator/",
     "scripts/utils.py",
-    "//testing/scripts/run_devtools_closure_compile.py",
     "//testing/scripts/common.py",
+    "//testing/scripts/run_devtools_check.py",
     "//testing/xvfb.py",
     "//third_party/WebKit/Source/core/inspector/browser_protocol.json",
     "//v8/src/inspector/js_protocol.json",
   ]
 }
+
+group("devtools_eslint") {
+  data = [
+    # Needed for isolate script to execute.
+    ".eslintignore",
+    ".eslintrc.js",
+    "devtools-node-modules/",
+    "front_end/",
+    "scripts/buildbot/run_eslint.py",
+    "scripts/local_node/",
+    "//testing/scripts/common.py",
+    "//testing/scripts/run_devtools_check.py",
+    "//testing/xvfb.py",
+  ]
+}