V8: Highligh slow tests not marked as slow.

scripts/slave/recipe_modules/v8/api.py

Index: scripts/slave/recipe_modules/v8/api.py
diff --git a/scripts/slave/recipe_modules/v8/api.py b/scripts/slave/recipe_modules/v8/api.py
index c3265be0f2c1167d3a38453a4d809a0fbfe95147..5257fe22edd0bf242ea446d01ff5e2e3208bfeb0 100644
--- a/scripts/slave/recipe_modules/v8/api.py
+++ b/scripts/slave/recipe_modules/v8/api.py
@@ -727,8 +727,13 @@ class V8Api(recipe_api.RecipeApi):
     # Slowest tests duration summary.
     lines = []
     for test in output['slowest_tests']:
+      suffix = ''
+      if test.get('marked_slow') is False:
+        suffix = ' *'
       lines.append(
-          '%s %s' %(V8Api.format_duration(test['duration']), test['name']))
+          '%s %s%s' % (V8Api.format_duration(test['duration']),
+                       test['name'], suffix))
+
     # Slowest tests duration details.
     lines.extend(['', 'Details:', ''])
     for test in output['slowest_tests']: