Extend chromium_tests trigger to work across masters.

scripts/slave/recipe_modules/chromium_tests/chromium_perf_fyi.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 . import steps
 
 
 RESULTS_URL = 'https://chromeperf.appspot.com'
 
 
-def _AddBotSpec(name, platform, parent_builder, perf_id, target_bits):
+def _AddBotSpec(name, platform, parent_builder, perf_id, target_bits,
+                parent_master=None):
   SPEC['builders'][name] = {
     'disable_tests': True,
     'bot_type': 'tester',
     'chromium_config_kwargs': {
       'BUILD_CONFIG': 'Release',
       'TARGET_BITS': target_bits,
     },
     'parent_buildername': parent_builder,
     'chromium_config': 'chromium_official',
     'gclient_config': 'perf',
     'testing': {
       'platform': platform,
     },
     'perf-id': perf_id,
     'results-url': RESULTS_URL,
     'tests': [
       steps.DynamicPerfTests(perf_id, platform, target_bits,
                              shard_index=0, num_host_shards=1),
     ],
   }
+  if parent_master:
+    SPEC['builders'][name]['parent_mastername'] = parent_master
 
 
 SPEC = {
   'settings': {
     'build_gs_bucket': 'chrome-perf',
   },
   'builders': {
     'Win x64 FYI Builder': {
       'disable_tests': True,
       'chromium_config': 'chromium_official',
@@ skipping 32 matching lines @@
         steps.SizesStep(RESULTS_URL, 'win-clang-builder')
       },
       'chromium_apply_config': ['chromium_perf_fyi'],
     },
   },
 }
 
 _AddBotSpec(
     name='Win 7 Intel GPU Perf (Xeon)',
     platform='win',
-    parent_builder='Win x64 FYI Builder',
+    parent_builder='Win x64 Builder',
     perf_id='chromium-rel-win7-gpu-intel',
-    target_bits=64)
+    target_bits=64,
+    parent_master='chromium.perf')
 
 _AddBotSpec(
     name='Win Clang Perf',
     platform='win',
     parent_builder='Win Clang Builder',
     perf_id='chromium-win-clang',
     target_bits=32)