[Telemetry] Add the feature of narrowing down the "gesture" interaction record to TBM.

tools/perf/measurements/smooth_gesture_util.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 copy
-
-from telemetry.web_perf import timeline_interaction_record as tir_module
-
-
-def GetAdjustedInteractionIfContainGesture(timeline, interaction_record):
-  """ Returns a new interaction record if interaction_record contains geture
-  whose time range that overlaps with interaction_record's range. If not,
-  returns a clone of original interaction_record.
-  The synthetic gesture controller inserts a trace marker to precisely
-  demarcate when the gesture was running. We check for overlap, not inclusion,
-  because gesture_actions can start/end slightly outside the telemetry markers
-  on Windows. This problem is probably caused by a race condition between
-  the browser and renderer process submitting the trace events for the
-  markers.
-  """
-  # Only adjust the range for gestures.
-  if not interaction_record.label.startswith('Gesture_'):
-    return copy.copy(interaction_record)
-  gesture_events = [
-    ev for ev
-    in timeline.IterAllAsyncSlicesOfName('SyntheticGestureController::running')
-    if ev.parent_slice is None and
-    ev.start <= interaction_record.end and
-    ev.end >= interaction_record.start]
-  if len(gesture_events) == 0:
-    return copy.copy(interaction_record)
-  if len(gesture_events) > 1:
-    raise Exception('More than one possible synthetic gesture marker found in '
-                    'interaction_record %s.' % interaction_record.label)
-  return tir_module.TimelineInteractionRecord(
-    interaction_record.label, gesture_events[0].start,
-    gesture_events[0].end, gesture_events[0],
-    interaction_record._flags)  # pylint: disable=W0212