Change auto_bisect to post results to perf dashboard.

scripts/slave/recipe_modules/auto_bisect/local_bisect.py

Index: scripts/slave/recipe_modules/auto_bisect/local_bisect.py
diff --git a/scripts/slave/recipe_modules/auto_bisect/local_bisect.py b/scripts/slave/recipe_modules/auto_bisect/local_bisect.py
index 518e14625d6419e847539204ec1a0b230b6b5f32..b5a429188d4264f776259137d65c8ab8c2e95f21 100644
--- a/scripts/slave/recipe_modules/auto_bisect/local_bisect.py
+++ b/scripts/slave/recipe_modules/auto_bisect/local_bisect.py
@@ -27,7 +27,7 @@ def perform_bisect(api):  # pragma: no cover
   else:
     bisector.bisect_over = True
   bisector.print_result_debug_info()
-  bisector.print_result()
+  bisector.post_result(halt_on_failure=True)
 
 
 def _ensure_checkout(api):  # pragma: no cover
@@ -75,9 +75,7 @@ def _bisect_main_loop(bisector):  # pragma: no cover
     completed_revisions = []
     with bisector.api.m.step.nest(str('Working on revision ' +
                                   revisions_to_check[0].revision_string)):
-      nest_step_result = bisector.api.m.step.active_result
-      partial_results = bisector.partial_results().splitlines()
-      nest_step_result.presentation.logs['Partial Results'] = partial_results
+      bisector.post_result(halt_on_failure=False)

[RobertoCN, 2016/01/12 20:47:29]

At first I was concerned that we might not be showing the results for debugging
purposes, I had to go to the perf_dashboard module to see that post_result
actually generates a step. I only wish the step would be called 'Partial
results' rather than 'Results' when appropriate (to avoid confusion).

[chrisphan, 2016/01/14 00:53:26]

Right, I was making 'post bisect results' step generic since it will be used in
multiple places and multiple purposes like failures, partial, and completion. 
And hoping dashboard will present the results in better format for those states.
 We can follow up with a CL to add the results link which points to dashboard
bisect result page (we talked about).

And if this still a bother, we can follow up with a change to add 'partial' to
'post bisect result' step name.

       for r in revisions_to_check:
         r.start_job()
       completed_revisions = _wait_for_revisions(bisector, revisions_to_check)