Create MSan config for Chromium recipe module + add WebRTC MSan recipe.

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 slave.recipe_config import config_item_context, ConfigGroup
 from slave.recipe_config import Dict, List, Single, Static, Set, BadConf
 from slave.recipe_config_types import Path
 
@@ skipping 322 matching lines @@
   if c.TARGET_PLATFORM == 'linux':
     c.gyp_env.GYP_DEFINES['use_allocator'] = 'none'
 
   c.gyp_env.GYP_DEFINES['asan'] = 1
   c.gyp_env.GYP_DEFINES['lsan'] = 1
 
 @config_ctx()
 def no_lsan(c):
   c.gyp_env.GYP_DEFINES['lsan'] = 0
 
+@config_ctx(deps=['compiler'])
+def msan(c):
+  if 'clang' not in c.compile_py.compiler:  # pragma: no cover
+    raise BadConf('msan requires clang')
+  c.gyp_env.GYP_DEFINES['msan'] = 1
+
+@config_ctx()
+def instrumented_libraries(c):
+  c.gyp_env.GYP_DEFINES['use_instrumented_libraries'] = 1
+  c.gyp_env.GYP_DEFINES['instrumented_libraries_jobs'] = 10
+
 @config_ctx(group='memory_tool')
 def memcheck(c):
   _memory_tool(c, 'memcheck')
   c.gyp_env.GYP_DEFINES['build_for_tool'] = 'memcheck'
 
 @config_ctx(deps=['compiler'], group='memory_tool')
 def tsan2(c):
   if 'clang' not in c.compile_py.compiler:  # pragma: no cover
     raise BadConf('tsan2 requires clang')
   gyp_defs = c.gyp_env.GYP_DEFINES
@@ skipping 45 matching lines @@
 
 @config_ctx(includes=['ninja', 'default_compiler', 'goma'])
 def chromium(c):
   c.compile_py.default_targets = ['All', 'chromium_builder_tests']
 
 @config_ctx(includes=['ninja', 'clang', 'goma', 'asan'])
 def chromium_asan(c):
   c.runtests.test_args.append('--test-launcher-batch-limit=1')
   c.runtests.test_args.append('--test-launcher-print-test-stdio=always')
 
+@config_ctx(includes=['ninja', 'clang', 'goma', 'msan'])
+def chromium_msan(c):
+  c.compile_py.default_targets = ['All', 'chromium_builder_tests']
+
 @config_ctx(includes=['ninja', 'clang', 'goma', 'syzyasan'])
 def chromium_syzyasan(c):
   c.compile_py.default_targets = ['All', 'chromium_builder_tests']
 
 @config_ctx(includes=['ninja', 'clang', 'goma', 'tsan2'])
 def chromium_tsan2(c):
   c.compile_py.default_targets = ['All', 'chromium_builder_tests']
 
 @config_ctx(includes=['ninja', 'default_compiler', 'goma', 'chromeos'])
 def chromium_chromeos(c):
@@ skipping 117 matching lines @@
   c.gyp_env.GYP_DEFINES['chrome_pgo_phase'] = 2
 
 @config_ctx()
 def v8_optimize_medium(c):
   c.gyp_env.GYP_DEFINES['v8_optimized_debug'] = 1
 
 @config_ctx()
 def chromium_perf(c):
   c.compile_py.clobber = False