Delete tools/telemetry.

tools/telemetry/examples/benchmarks/v8_metric.py

-# Copyright 2015 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.
-
-from telemetry.value import improvement_direction
-from telemetry.value import scalar
-from telemetry.web_perf.metrics import timeline_based_metric
-
-def _IsMessageLoopEvent(event):
-  return event.name.startswith('v8')
-
-
-class _AverageMessageLoopLatency(scalar.ScalarValue):
-  def __init__(self, value, page, tir_label, none_value_reason=None):
-    super(_AverageMessageLoopLatency, self).__init__(
-      page=page, name='avg_v8_events_latency', value=value,
-      tir_label=tir_label,
-      units='ms', improvement_direction=improvement_direction.DOWN,
-      description=('Average wall-time latency of message loop events during '
-                   'any of the interaction records\' time ranges'),
-      none_value_reason=none_value_reason)
-
-
-class MessageLoopLatencyMetric(timeline_based_metric.TimelineBasedMetric):
-
-  def AddResults(self, model, renderer_thread, interactions, results):
-    v8_events = []
-    for event in model.IterAllEvents(event_predicate=_IsMessageLoopEvent):
-      if timeline_based_metric.IsEventInInteractions(event, interactions):
-        v8_events.append(event)
-
-    if v8_events:
-      avg = (
-          sum(e.duration for e in v8_events)/len(v8_events))
-      results.AddValue(_AverageMessageLoopLatency(
-          value=avg, page=results.current_page,
-          tir_label=interactions[0].label))
-    else:
-      results.AddValue(_AverageMessageLoopLatency(
-          None, page=results.current_page,
-          tir_label=interactions[0].label,
-          none_value_reason='No v8 events found.'))