Refactor WPT Export to ensure only one PR in flight at a time

third_party/WebKit/Tools/Scripts/webkitpy/w3c/sync_wpt.py

Index: third_party/WebKit/Tools/Scripts/webkitpy/w3c/sync_wpt.py
diff --git a/third_party/WebKit/Tools/Scripts/webkitpy/w3c/sync_wpt.py b/third_party/WebKit/Tools/Scripts/webkitpy/w3c/sync_wpt.py
index f7e4d4066f3cea76d28ce884084090190a26df55..efcb483793b71d0e490f4aefb5fef9eef41ac658 100644
--- a/third_party/WebKit/Tools/Scripts/webkitpy/w3c/sync_wpt.py
+++ b/third_party/WebKit/Tools/Scripts/webkitpy/w3c/sync_wpt.py
@@ -15,11 +15,8 @@ import argparse
 import logging
 
 from webkitpy.common.host import Host
-from webkitpy.common.system.executive import ScriptError
-from webkitpy.w3c.chromium_commit import ChromiumCommit
-from webkitpy.w3c.chromium_wpt import ChromiumWPT
-from webkitpy.w3c.github import GitHub
-from webkitpy.w3c.local_wpt import LocalWPT
+from webkitpy.w3c.wpt_github import WPTGitHub
+from webkitpy.w3c.test_exporter import TestExporter
 from webkitpy.w3c.test_importer import configure_logging
 
 _log = logging.getLogger(__name__)
@@ -29,45 +26,14 @@ def main():
     configure_logging()
     options = parse_args()
     host = Host()
-    github = GitHub(host)
+    wpt_github = WPTGitHub(host)
+    test_exporter = TestExporter(host, wpt_github, dry_run=options.dry_run)
 
-    local_wpt = LocalWPT(host, no_fetch=options.no_fetch, use_github=True)
-    chromium_wpt = ChromiumWPT(host)
-
-    wpt_commit, chromium_commit = local_wpt.most_recent_chromium_commit()
-    assert chromium_commit, 'No Chromium commit found, this is impossible'
-
-    _log.info('web-platform-tests@%s (%d behind origin/master)',
-              wpt_commit, local_wpt.commits_behind_master(wpt_commit))
-    _log.info('chromium@%s (%d behind origin/master)',
-              chromium_commit.sha, chromium_commit.num_behind_master())
-
-    exportable_commits = chromium_wpt.exportable_commits_since(chromium_commit.sha)
-
-    if exportable_commits:
-        _log.info('Found %s exportable commits in chromium:', len(exportable_commits))
-        for commit in exportable_commits:
-            _log.info('- %s %s', commit, chromium_wpt.subject(commit))
-    else:
-        _log.info('No exportable commits found in Chromium, stopping.')
-        return
-
-    for commit in exportable_commits:
-        _log.info('Uploading %s', chromium_wpt.subject(commit))
-        chromium_commit = ChromiumCommit(host, sha=commit)
-
-        patch = chromium_wpt.format_patch(commit)
-        message = chromium_wpt.message(commit)
-
-        local_wpt.create_branch_with_patch(branch_name, message, patch)
-
-        github.create_pr(
-            local_branch_name='chromium-try-{}'.format(commit),
-            desc_title=chromium_commit.subject(),
-            body=chromium_commit.body())
+    test_exporter.run()
 
 
 def parse_args():
     parser = argparse.ArgumentParser(description='WPT Sync')
     parser.add_argument('--no-fetch', action='store_true')
+    parser.add_argument('--dry-run', action='store_true')
     return parser.parse_args()