Refactor chromium.perf recipe configs.

scripts/slave/recipe_modules/chromium/config.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 pipes
 
 from recipe_engine.config import config_item_context, ConfigGroup
 from recipe_engine.config import Dict, List, Single, Static, Set, BadConf
 from recipe_engine.config_types import Path
 
@@ skipping 763 matching lines @@
   c.gyp_env.GYP_DEFINES['v8_optimized_debug'] = 1
 
 @config_ctx()
 def v8_slow_dchecks(c):
   c.gyp_env.GYP_DEFINES['v8_enable_slow_dchecks'] = 1
 
 @config_ctx()
 def v8_verify_heap(c):
   c.gyp_env.GYP_DEFINES['v8_enable_verify_heap'] = 1
 
-@config_ctx()
+@config_ctx(includes=['chromium', 'official', 'mb'])
 def chromium_perf(c):
   c.clobber_before_runhooks = False
 
-@config_ctx()
-def chromium_perf_fyi(c):
-  c.clobber_before_runhooks = False
-  if c.HOST_PLATFORM == 'win':
-    c.compile_py.compiler = None
-    c.compile_py.goma_dir = None
-    c.gyp_env.GYP_DEFINES['use_goma'] = 0
+@config_ctx(includes=['chromium_perf', 'goma_hermetic_fallback'])
+def tryserver_chromium_perf(c):
+  # Bisects may build using old toolchains, so goma_hermetic_fallback is
+  # required. See https://codereview.chromium.org/1015633002
+  pass
 
 @config_ctx(includes=['chromium_clang'])
 def cast_linux(c):
   c.gyp_env.GYP_DEFINES['chromecast'] = 1
 
 @config_ctx()
 def internal_gles2_conform_tests(c):
   c.gyp_env.GYP_DEFINES['internal_gles2_conform_tests'] = 1
 
 @config_ctx()
 def build_angle_deqp_tests(c):
   c.gyp_env.GYP_DEFINES['build_angle_deqp_tests'] = 1
 
 @config_ctx()
 def force_mac_toolchain(c):
   c.env.FORCE_MAC_TOOLCHAIN = 1
   c.gyp_env.FORCE_MAC_TOOLCHAIN = 1