Downloading Node and NPM deps via gclient sync.

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.
 #
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     ],
   },
   {
     'name': 'devtools_install_node',
     'action': [ 'python',
                 'src/third_party/WebKit/Source/devtools/scripts/local_node/node.py',
                 '--running-as-hook',
                 '--version',
     ],
   },
+
+  # Pull down Node binaries for WebUI toolchain.
+  {
+    'name': 'node_linux64',
+    'pattern': '.',
+    'action': [ 'download_from_google_storage',
+                '--no_resume',
+                '--platform=linux*',
+                '--extract',
+                '--no_auth',
+                '--bucket', 'chromium-nodejs/6.9.2',
+                '-s', 'src/third_party/node/linux/node-v6.9.2-linux-x64.tar.gz.sha1',
+    ],
+  },
+  {
+    'name': 'node_mac',
+    'pattern': '.',
+    'action': [ 'download_from_google_storage',
+                '--no_resume',
+                '--platform=darwin',
+                '--extract',
+                '--no_auth',
+                '--bucket', 'chromium-nodejs/6.9.2',
+                '-s', 'src/third_party/node/mac/node-v6.9.2-darwin-x64.tar.gz.sha1',
+    ],
+  },
+  {
+    'name': 'node_win',
+    'pattern': '.',
+    'action': [ 'download_from_google_storage',
+                '--no_resume',
+                '--platform=win32',
+                '--no_auth',
+                '--bucket', 'chromium-nodejs/6.9.2',
+                '-s', 'src/third_party/node/win/node.exe.sha1',
+    ],
+  },
+
+  # Pull down NPM dependencies for WebUI toolchain.
+  {
+    'name': 'webui_node_modules',
+    'pattern': '.',
+    'action': [ 'download_from_google_storage',
+                '--no_resume',
+                '--extract',
+                '--no_auth',
+                '--bucket', 'chromium-nodejs',
+                '-s', 'src/third_party/node/node_modules.tar.gz.sha1',
+    ],
+  },
 ]
 
 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"),
 ]