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

DEPS

 # This file is used to manage the dependencies of the Chromium src repo. It is
 # used by gclient to determine what version of each dependency to check out, and
 # where.
 #
 # For more information, please refer to the official documentation:
 #   https://sites.google.com/a/chromium.org/dev/developers/how-tos/get-the-code
 #
 # When adding a new dependency, please update the top-level .gitignore file
 # to list the dependency's destination directory.
 #
@@ skipping 1000 matching lines @@
                 "-s", "src/v8/test/fuzzer/wasm_asmjs.tar.gz.sha1",
     ],
   },
   {
     'name': 'clang_format_merge_driver',
     'pattern': '.',
     'action': [ 'python',
                 'src/tools/clang_format_merge_driver/install_git_hook.py',
     ],
   },
+  {
+    'name': 'devtools_install_node',
+    'action': [ 'python',
+                'src/third_party/WebKit/Source/devtools/scripts/local_node/node.py',
+                '--running-as-hook',
+                '--version',
+    ],
+  },
 ]
 
 recursedeps = [
   # buildtools provides clang_format, libc++, and libc++abi
   'src/buildtools',
   # android_tools manages the NDK.
   'src/third_party/android_tools',
   # ANGLE manages DEPS that it also owns the build files for, such as dEQP.
   ("src/third_party/angle", "DEPS.chromium"),
 ]