Refactor chromium.perf recipe configs.

scripts/slave/recipe_modules/chromium_android/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.
 
 from recipe_engine.config_types import Path
 from recipe_engine import config as recipe_config
 
 import DEPS
 CONFIG_CTX = DEPS['chromium'].CONFIG_CTX
 
@@ skipping 179 matching lines @@
 @CONFIG_CTX(includes=['main_builder'])
 def incremental_coverage_builder_tests(c):
   gyp_defs = c.gyp_env.GYP_DEFINES
   gyp_defs['emma_coverage'] = 1
   gyp_defs['emma_filter'] = 'org.chromium.*'
 
 @CONFIG_CTX(includes=['main_builder'])
 def non_device_wipe_provisioning(c):
   pass
 
-# TODO(zty): figure out what perf builder really wants and use that instead.
-# e.g. official
-@CONFIG_CTX(includes=['main_builder'])
-def perf(c):
-  gyp_defs = c.gyp_env.GYP_DEFINES
-  gyp_defs['branding'] = 'Chrome'
-  gyp_defs['buildtype'] = 'Official'
-
 @CONFIG_CTX(includes=['main_builder'])
 def cast_builder(c):
   c.gyp_env.GYP_DEFINES['chromecast'] = 1
 
 @CONFIG_CTX()
 def disable_neon(c):  # pragma: no cover
   c.gn_args.append('arm_use_neon=false')
   c.gyp_env.GYP_DEFINES['arm_neon'] = 0
 
 @CONFIG_CTX()
 def errorprone(c):
   c.gyp_env.GYP_DEFINES['enable_errorprone'] = 1