fix: pass root_gen_dir from GN to generate_node_headers.py

PR #50828 replaced a local get_out_dir() (defaulting to 'Testing') with
the shared one from script/lib/util.py (defaulting to 'Default').
Neither default is correct because the actual output directory depends
on the active build config. Pass $root_gen_dir from the GN action so
the script always uses the correct path.

BUILD.gn

@@ -1644,6 +1644,7 @@ action("node_version_header") {
 action("generate_node_headers") {
   deps = [ ":generate_config_gypi" ]
   script = "script/node/generate_node_headers.py"
+  args = [ rebase_path("$root_gen_dir") ]
   outputs = [ "$root_gen_dir/node_headers.json" ]
 }
 

package.json

@@ -21,7 +21,7 @@
     "@types/semver": "^7.5.8",
     "@types/stream-json": "^1.7.8",
     "@types/temp": "^0.9.4",
-    "@xmldom/xmldom": "^0.8.11",
+    "@xmldom/xmldom": "^0.8.12",
     "buffer": "^6.0.3",
     "chalk": "^4.1.0",
     "check-for-leaks": "^1.2.1",

script/node/generate_node_headers.py

@@ -31,13 +31,6 @@ def LoadPythonDictionary(path):
             )
         return file_data
 
-def get_out_dir():
-    out_dir = 'Testing'
-    override = os.environ.get('ELECTRON_OUT_DIR')
-    if override is not None:
-        out_dir = override
-    return os.path.join(SRC_DIR, 'out', out_dir)
-
 if __name__ == '__main__':
     node_root_dir = os.path.join(SRC_DIR, 'third_party/electron_node')
     out = {}
@@ -61,7 +54,7 @@ if __name__ == '__main__':
                 hs = {'files': sorted(files), 'dest_dir': dest_dir}
                 out['headers'].append(hs)
 
-    root_gen_dir = os.path.join(get_out_dir(), 'gen')
+    root_gen_dir = os.path.abspath(sys.argv[1])
     config_gypi_path = os.path.join(root_gen_dir, 'config.gypi')
     node_headers_dir = os.path.join(root_gen_dir, 'node_headers')
 

yarn.lock

@@ -590,7 +590,7 @@ __metadata:
     "@types/semver": "npm:^7.5.8"
     "@types/stream-json": "npm:^1.7.8"
     "@types/temp": "npm:^0.9.4"
-    "@xmldom/xmldom": "npm:^0.8.11"
+    "@xmldom/xmldom": "npm:^0.8.12"
     buffer: "npm:^6.0.3"
     chalk: "npm:^4.1.0"
     check-for-leaks: "npm:^1.2.1"
@@ -2503,7 +2503,14 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@xmldom/xmldom@npm:^0.8.11, @xmldom/xmldom@npm:^0.8.8":
+"@xmldom/xmldom@npm:^0.8.12":
+  version: 0.8.12
+  resolution: "@xmldom/xmldom@npm:0.8.12"
+  checksum: 10c0/b733c84292d1bee32ef21a05aba8f9063456b51a54068d0b4a1abf5545156ee0b9894b7ae23775b5881b11c35a8a03871d1b514fb7e1b11654cdbee57e1c2707
+  languageName: node
+  linkType: hard
+
+"@xmldom/xmldom@npm:^0.8.8":
   version: 0.8.11
   resolution: "@xmldom/xmldom@npm:0.8.11"
   checksum: 10c0/e768623de72c95d3dae6b5da8e33dda0d81665047811b5498d23a328d45b13feb5536fe921d0308b96a4a8dd8addf80b1f6ef466508051c0b581e63e0dc74ed5