[telemetry] Sort imports in Telemetry and its dependents.

tools/perf/benchmarks/dom_perf.py

 # Copyright 2013 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 json
 import math
 import os
 
 from telemetry import benchmark
+from telemetry.core import util
 from telemetry import page as page_module
-from telemetry.core import util
 from telemetry.page import page_set
 from telemetry.page import page_test
 from telemetry.value import merge_values
 from telemetry.value import scalar
 
 
 def _GeometricMean(values):
   """Compute a rounded geometric mean from an array of values."""
   if not values:
     return None
@@ skipping 73 matching lines @@
       'Events',
       'Get+Elements',
       'GridSort',
       'Template'
     ]
     ps = page_set.PageSet(file_path=dom_perf_dir)
     for param in run_params:
       ps.AddUserStory(page_module.Page(
           'file://run.html?reportInJS=1&run=%s' % param, ps, ps.base_dir))
     return ps