WebRTC: Add Linux GCC bot.

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 264 matching lines @@
   c.gyp_env.GYP_GENERATORS.add('xcode')
 
 def _clang_common(c):
   c.compile_py.compiler = 'clang'
   c.gyp_env.GYP_DEFINES['clang'] = 1
 
 @config_ctx(group='compiler')
 def clang(c):
   _clang_common(c)
 
+@config_ctx()

[Michael Achenbach, 2015/10/20 06:54:18]

If you put it into this file, maybe add group='compiler' for consistency
reasons? We never added group constraints in v8 - they always gave us trouble
when inheriting things that already had group constraints - so I'm not sure if
it's going to work.

[kjellander_chromium, 2015/10/20 07:43:23]

I tried but then it failed with:
BadConf: "no_clang" is a member of group "compiler", but ('default_compiler',)
already ran
using the current setup of configs.
I updated this in PS#3 and added Pawel to leave his opinion on how we should do.
I could also add a chromium_gcc config, but I'm not sure it makes sense since
there's no Chromium GCC bot.

+def no_clang(c):
+  c.gyp_env.GYP_DEFINES['clang'] = 0
+
 @config_ctx(group='compiler')
 def default_compiler(c):
   if c.TARGET_PLATFORM in ('mac', 'ios'):
     _clang_common(c)
 
 @config_ctx(deps=['compiler', 'builder'], group='distributor')
 def goma(c):
   if c.compile_py.build_tool == 'vs':  # pragma: no cover
     raise BadConf('goma doesn\'t work with msvs')
 
@@ skipping 494 matching lines @@
 @config_ctx()
 # TODO(erikchen): This config is used by bots that run tests, but don't compile.
 # If these bots are given the 10.10 SDK, we wouldn't need this special config.
 # http://crbug.com/515310
 def chromium_mac_sdk_10_6(c):
   c.gyp_env.GYP_DEFINES['mac_sdk_min'] = '10.6'
 
 @config_ctx(includes=['chromium_clang'])
 def cast_linux(c):
   c.gyp_env.GYP_DEFINES['chromecast'] = 1