Bench rebaseline from codereview: fix is_finished

tools/gen_bench_expectations_from_codereview.py

Index: tools/gen_bench_expectations_from_codereview.py
diff --git a/tools/gen_bench_expectations_from_codereview.py b/tools/gen_bench_expectations_from_codereview.py
index f29c6526f57a25ea00bc29a01d728fc85ebd1908..3d40aa67eb04d3dd4d87a40305e9ebd4ec648c5c 100644
--- a/tools/gen_bench_expectations_from_codereview.py
+++ b/tools/gen_bench_expectations_from_codereview.py
@@ -41,8 +41,11 @@ def find_all_builds(codereview_url):
   for builder, data in results.iteritems():
     if builder.startswith('Perf'):
       build_num = data.url.split('/')[-1] if data.url else None
-      try_builds.append(TryBuild(builder, build_num,
-                                 data.status != 'pending'))
+      is_finished = (data.status not in ('pending', 'try-pending') and
+                     build_num is not None)
+      try_builds.append(TryBuild(builder_name=builder,
+                                 build_number=build_num,
+                                 is_finished=is_finished))
   return try_builds