Adding display_values property for each revision.

scripts/slave/recipe_modules/auto_bisect_staging/revision_state.py

Index: scripts/slave/recipe_modules/auto_bisect_staging/revision_state.py
diff --git a/scripts/slave/recipe_modules/auto_bisect_staging/revision_state.py b/scripts/slave/recipe_modules/auto_bisect_staging/revision_state.py
index 56ee11933e46999c81b72631f6a658a852a17bf6..8b3c89de6e43c8ec21a6db7809760b8479b9ba8c 100644
--- a/scripts/slave/recipe_modules/auto_bisect_staging/revision_state.py
+++ b/scripts/slave/recipe_modules/auto_bisect_staging/revision_state.py
@@ -128,6 +128,12 @@ class RevisionState(object):
         len(self.return_codes))
 
   @property
+  def display_values(self):
+    if self.bisector.is_return_code_mode():
+      return self.return_codes
+    return self.debug_values
+
+  @property
   def mean(self):
     if self.debug_values:
       return float(sum(self.debug_values))/len(self.debug_values)