[WPT Export] Add ability to pass GitHub creds as JSON file

third_party/WebKit/Tools/Scripts/wpt-export

Index: third_party/WebKit/Tools/Scripts/wpt-export
diff --git a/third_party/WebKit/Tools/Scripts/wpt-export b/third_party/WebKit/Tools/Scripts/wpt-export
index 0b3e4aee694825692f8b699990b2a31667c17373..f9b3f2bf83a67f15aab5ba038e4ace08235bede1 100755
--- a/third_party/WebKit/Tools/Scripts/wpt-export
+++ b/third_party/WebKit/Tools/Scripts/wpt-export
@@ -11,6 +11,7 @@ repository.
 """
 
 import argparse
+import json
 import logging
 
 from webkitpy.common.host import Host
@@ -30,23 +31,34 @@ def main():
         help='See what would be done without actually creating or merging '
              'any pull requests.')
     parser.add_argument(
-        '--user',
+        '--gh-user',
         help='GitHub user name. Can also be provided using the GH_USER '
              'environment variable.')
     parser.add_argument(
-        '--token',
+        '--gh-token',
         help='GitHub token or password. Can also be provided using the GH_TOKEN '
              'environment variable.')
+    parser.add_argument(
+        '--github-credentials-json',
+        help='A JSON file with schema {"GH_USER": "", "GH_TOKEN": ""}. '
+             'This will override credentials that were passed via command line or env var.')
     args = parser.parse_args()
     host = Host()
-    if not args.user:
+
+    if not args.gh_user:
         args.user = host.environ.get('GH_USER')
-    if not args.token:
-        args.token = host.environ.get('GH_TOKEN')
-    if not (args.user and args.token):
-        parser.error('Must provide both user and token for GitHub.')
+    if not args.gh_token:
+        args.gh_token = host.environ.get('GH_TOKEN')
+    if args.github_credentials_json:
+        with open(args.github_credentials_json, 'r') as f:
+            contents = json.load(f)
+            args.gh_user = contents['GH_USER']
+            args.gh_token = contents['GH_TOKEN']
+
+    if not (args.gh_user and args.gh_token):
+        parser.error('Must provide both gh_user and gh_token for GitHub.')
 
-    wpt_github = WPTGitHub(host, args.user, args.token)
+    wpt_github = WPTGitHub(host, args.gh_user, args.gh_token)
     test_exporter = TestExporter(host, wpt_github, dry_run=args.dry_run)
 
     test_exporter.run()