Move blink_perf.xml_http_request benchmark to tools/perf/contrib/ directory

tools/perf/benchmarks/blink_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 os
 
 from core import path_util
 from core import perf_benchmark
 
 from telemetry import benchmark
@@ skipping 280 matching lines @@
 @benchmark.Owner(emails=['hayato@chromium.org'])
 class BlinkPerfShadowDOM(_BlinkPerfBenchmark):
   tag = 'shadow_dom'
   subdir = 'ShadowDOM'
 
   @classmethod
   def ShouldDisable(cls, possible_browser):  # http://crbug.com/702319
     return possible_browser.platform.GetDeviceTypeName() == 'Nexus 5X'
 
 
-# This benchmark is for local testing, doesn't need to run on bots.
-@benchmark.Disabled('all')
-@benchmark.Owner(emails=['tyoshino@chromium.org', 'hiroshige@chromium.org'])
-class BlinkPerfXMLHttpRequest(_BlinkPerfBenchmark):
-  tag = 'xml_http_request'
-  subdir = 'XMLHttpRequest'
-
 
 # Disabled on Windows and ChromeOS due to https://crbug.com/521887
 #@benchmark.Disabled('win', 'chromeos')
 # Disabling on remaining platforms due to heavy flake https://crbug.com/646938
 @benchmark.Disabled('all')
 @benchmark.Owner(emails=['tyoshino@chromium.org', 'yhirano@chromium.org'])
 class BlinkPerfPywebsocket(_BlinkPerfBenchmark):
   """The blink_perf.pywebsocket tests measure turn-around-time of 10MB
   send/receive for XHR, Fetch API and WebSocket. We might ignore < 10%
   regressions, because the tests are noisy and such regressions are
   often unreproducible (https://crbug.com/549017).
   """
   tag = 'pywebsocket'
   subdir = 'Pywebsocket'
 
   def CreateStorySet(self, options):
     path = os.path.join(BLINK_PERF_BASE_DIR, self.subdir)
     return CreateStorySetFromPath(
         path, SKIPPED_FILE,
         shared_page_state_class=_SharedPywebsocketPageState)
 
   @classmethod
   def ShouldDisable(cls, possible_browser):
     return cls.IsSvelte(possible_browser)  # http://crbug.com/551950