Convert results.Add to results.AddValue for files in web_perf/

tools/telemetry/telemetry/web_perf/metrics/fast_metric.py

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import logging
 
 from telemetry.timeline import bounds
+from telemetry.value import scalar
 from telemetry.web_perf import timeline_interaction_record as tir_module
 from telemetry.web_perf.metrics import timeline_based_metric
 
 
 class FastMetric(timeline_based_metric.TimelineBasedMetric):
   def __init__(self):
     super(FastMetric, self).__init__()
 
   def AddResults(self, model, renderer_thread, interaction_records, results):
     """Add three results: duration, cpu_time, and idle_time.
 
     duration is the total wall time for |interaction_records|.
     cpu_time is the renderer thread time that intersects |interaction_records|.
     idle time is wall time for |interaction_records| for which renderer slices
         do not overlap. Note that unscheduled renderer thread time is not
         counted. Idle time is time for which there was nothing to do.
 
     Args:
       model: a TimelineModule instance
       renderer_thread: a telemetry.timeline.thread.Thread() instance
       interaction_records: an iterable of TimelineInteractionRecord instances
       results: an instance of page.PageTestResults
     """
     self.VerifyNonOverlappedRecords(interaction_records)
 
     duration = sum(r.end - r.start for r in interaction_records)
-    results.Add('fast-duration', 'ms', duration)
+    results.AddValue(scalar.ScalarValue(
+        results.current_page, 'fast-duration', 'ms', duration))
 
     try:
       cpu_time = sum(
           r.GetOverlappedThreadTimeForSlice(s)
           for r in interaction_records
           for s in renderer_thread.toplevel_slices)
     except tir_module.NoThreadTimeDataException:
       logging.warning(
           'Main thread cpu_time cannot be computed for records %s since '
           'trace does not contain thread time data.',
           repr(interaction_records))
     else:
-      results.Add('fast-cpu_time', 'ms', cpu_time)
+      results.AddValue(scalar.ScalarValue(
+          results.current_page, 'fast-cpu_time', 'ms', cpu_time))
 
     idle_time = duration - sum(
         bounds.Bounds.GetOverlap(r.start, r.end, s.start, s.end)
         for r in interaction_records
         for s in renderer_thread.toplevel_slices)
-    results.Add('fast-idle_time', 'ms', idle_time)
+    results.AddValue(scalar.ScalarValue(
+        results.current_page, 'fast-idle_time', 'ms', idle_time))