build: remove the tools folder (electron#24880)

BUILD.gn

@@ -170,7 +170,7 @@ action("electron_js2c") {
   inputs = sources + [ "//third_party/electron_node/tools/js2c.py" ]
   outputs = [ "$root_gen_dir/electron_natives.cc" ]
 
-  script = "tools/js2c.py"
+  script = "build/js2c.py"
   args = [ rebase_path("//third_party/electron_node") ] +
          rebase_path(outputs, root_build_dir) +
          rebase_path(sources, root_build_dir)

script/run-if-exists.js

@@ -0,0 +1,17 @@
+const cp = require('child_process');
+const fs = require('fs');
+
+const checkPath = process.argv[2];
+const command = process.argv.slice(3);
+
+if (fs.existsSync(checkPath)) {
+  const child = cp.spawn(
+    `${command[0]}${process.platform === 'win32' ? '.cmd' : ''}`,
+    command.slice(1),
+    {
+      stdio: 'inherit',
+      cwd: checkPath
+    }
+  );
+  child.on('exit', code => process.exit(code));
+}

spec/package.json

@@ -4,7 +4,7 @@
   "main": "static/main.js",
   "version": "0.1.0",
   "scripts": {
-    "postinstall": "node ../tools/run-if-exists.js node_modules/robotjs node-gyp rebuild"
+    "postinstall": "node ../script/run-if-exists.js node_modules/robotjs node-gyp rebuild"
   },
   "devDependencies": {
     "basic-auth": "^2.0.1",