[telemetry] Sort imports in Telemetry and its dependents.

tools/perf/benchmarks/oilpan_gc_times.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 os
 
-import page_sets
-from benchmarks import blink_perf
-from benchmarks import silk_flags
-from measurements import oilpan_gc_times
 from telemetry import benchmark
 from telemetry.core import util
 from telemetry import page
 
+from benchmarks import blink_perf
+from benchmarks import silk_flags
+from measurements import oilpan_gc_times
+import page_sets
+
 
 class OilpanGCTimesBlinkPerfAnimation(benchmark.Benchmark):
   tag = 'blink_perf_animation'
   test = oilpan_gc_times.OilpanGCTimesForBlinkPerf
 
   @classmethod
   def Name(cls):
     return 'oilpan_gc_times.blink_perf_animation'
 
   def CreatePageSet(self, options):
@@ skipping 38 matching lines @@
 class OilpanGCTimesSyncScrollKeyMobileSites(benchmark.Benchmark):
   tag = 'sync_scroll'
   test = oilpan_gc_times.OilpanGCTimesForSmoothness
   page_set = page_sets.KeyMobileSitesSmoothPageSet
   def CustomizeBrowserOptions(self, options):
     silk_flags.CustomizeBrowserOptionsForSyncScrolling(options)
   @classmethod
   def Name(cls):
     return 'oilpan_gc_times.sync_scroll.key_mobile_sites_smooth'