Merge pull request mozilla#8976 from Snuffleupagus/webpack-simpler-no…

…de-polyfills-disable

Simplify the disabling of Node polyfills, in `gulpfile.js`, since we're now using Webpack 3.x

gulpfile.js

@@ -168,17 +168,7 @@ function createWebpackConfig(defines, output) {
  },
  // Avoid shadowing actual Node.js variables with polyfills, by disabling
  // polyfills/mocks - https://webpack.js.org/configuration/node/
- node: {
- console: false,
- global: false,
- process: false,
- __filename: false,
- __dirname: false,
- Buffer: false,
- setImmediate: false,
- },
- // If we upgrade to Webpack 3.0+, the above can be replaced with:
- // node: false,
+ node: false,
  };
 }