Delete tools/telemetry.

tools/telemetry/telemetry/timeline/async_slice.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 telemetry.timeline.event as event
-
-
-class AsyncSlice(event.TimelineEvent):
-  """An AsyncSlice represents an interval of time during which an
-  asynchronous operation is in progress. An AsyncSlice consumes no CPU time
-  itself and so is only associated with Threads at its start and end point.
-  """
-  def __init__(self, category, name, timestamp, args=None,
-               duration=0, start_thread=None, end_thread=None,
-               thread_start=None, thread_duration=None):
-    super(AsyncSlice, self).__init__(
-        category, name, timestamp, duration, thread_start, thread_duration,
-        args)
-    self.parent_slice = None
-    self.start_thread = start_thread
-    self.end_thread = end_thread
-    self.sub_slices = []
-    self.id = None
-
-  def AddSubSlice(self, sub_slice):
-    assert sub_slice.parent_slice == self
-    self.sub_slices.append(sub_slice)
-
-  def IterEventsInThisContainerRecrusively(self):
-    for sub_slice in self.sub_slices:
-      yield sub_slice