diff -r 000000000000 -r 4f2f89ce4247 WebKitTools/Scripts/webkitpy/tool/steps/validatereviewer.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebKitTools/Scripts/webkitpy/tool/steps/validatereviewer.py	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,71 @@
+# Copyright (C) 2010 Google Inc. All rights reserved.
+# 
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+# 
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+# 
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+import os
+import re
+
+from webkitpy.common.checkout.changelog import ChangeLog
+from webkitpy.tool.steps.abstractstep import AbstractStep
+from webkitpy.tool.steps.options import Options
+from webkitpy.common.system.deprecated_logging import error, log
+
+
+# FIXME: Some of this logic should probably be unified with CommitterValidator?
+class ValidateReviewer(AbstractStep):
+    @classmethod
+    def options(cls):
+        return AbstractStep.options() + [
+            Options.git_commit,
+        ]
+
+    # FIXME: This should probably move onto ChangeLogEntry
+    def _has_valid_reviewer(self, changelog_entry):
+        if changelog_entry.reviewer():
+            return True
+        if re.search("unreviewed", changelog_entry.contents(), re.IGNORECASE):
+            return True
+        if re.search("rubber[ -]stamp", changelog_entry.contents(), re.IGNORECASE):
+            return True
+        return False
+
+    def run(self, state):
+        # FIXME: For now we disable this check when a user is driving the script
+        # this check is too draconian (and too poorly tested) to foist upon users.
+        if not self._options.non_interactive:
+            return
+        # FIXME: We should figure out how to handle the current working
+        #        directory issue more globally.
+        os.chdir(self._tool.scm().checkout_root)
+        for changelog_path in self.cached_lookup(state, "changelogs"):
+            changelog_entry = ChangeLog(changelog_path).latest_entry()
+            if self._has_valid_reviewer(changelog_entry):
+                continue
+            reviewer_text = changelog_entry.reviewer_text()
+            if reviewer_text:
+                log("%s found in %s does not appear to be a valid reviewer according to committers.py." % (reviewer_text, changelog_path))
+            error('%s neither lists a valid reviewer nor contains the string "Unreviewed" or "Rubber stamp" (case insensitive).' % changelog_path)