[telemetry] Sort imports in Telemetry and its dependents.

tools/perf/benchmarks/skpicture_printer.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.
 
-from measurements import skpicture_printer
 from telemetry import benchmark
 from telemetry.core import discover
 from telemetry.page import page_set
 
+from measurements import skpicture_printer
+
 
 def _MatchPageSetName(page_set_name, page_set_base_dir):
   page_sets = []
   page_sets += discover.DiscoverClasses(page_set_base_dir, page_set_base_dir,
                                         page_set.PageSet,
                                         index_by_class_name=True).values()
   for p in page_sets:
     if page_set_name == p.Name():
       return p
   return None
@@ skipping 20 matching lines @@
   def Name(cls):
     return 'skpicture_printer'
 
   def CreatePageTest(self, options):
     return skpicture_printer.SkpicturePrinter(options.skp_outdir)
 
   def CreatePageSet(self, options):
     page_set_class = _MatchPageSetName(options.page_set_name,
                                        options.page_set_base_dir)
     return page_set_class()