Release build fail on MacOS

[simonhong]

simon-home:brave-browser-new simonhong$ yarn build Release
yarn run v1.5.1
$ node ./scripts/commands.js build Release
touch original files overridden by chromium_src...
/Users/simonhong/Projects/brave/brave-browser-new/src/base/mac/foundation_util.mm is touched.
update branding...
building brave...
gn gen /Users/simonhong/Projects/brave/brave-browser-new/src/out/Release --args="safe_browsing_mode=1 use_egl=false root_extra_deps=[\"//brave\"] is_component_build=false proprietary_codecs=true ffmpeg_branding=\"Chrome\" enable_nacl=false enable_widevine=true target_cpu=\"x64\" is_official_build=true is_debug=false dcheck_always_on=false brave_channel=\"\" google_api_key=\"AIzaSyAH90V94EcZBP5oH7oc-mXQrSKgASVxER8\" brave_google_api_key=\"AIzaSyAQfxPJiounkhOjODEO5ZieffeBv6yft2Q\" brave_google_api_endpoint=\"https://www.googleapis.com/geolocation/v1/geolocate?key=\" brave_product_name=\"Brave\" brave_project_name=\"brave\" brave_version_major=\"0\" brave_version_minor=\"54\" brave_version_build=\"0\" chrome_version_string=\"69.0.3497.32\" safebrowsing_api_endpoint=\"safebrowsing.brave.com\" mac_signing_identifier=\"\" mac_signing_keychain=\"login\" cc_wrapper=\"/Users/simonhong/Projects/brave/brave-browser-new/src/brave/script/redirect-cc.py\" "
Done. Made 9180 targets from 1668 files in 5901ms
ninja -C /Users/simonhong/Projects/brave/brave-browser-new/src/out/Release brave
ninja: Entering directory `/Users/simonhong/Projects/brave/brave-browser-new/src/out/Release'
[1/1] Regenerating ninja files
[26/1641] OBJCXX obj/base/base/foundation_util.o
FAILED: obj/base/base/foundation_util.o
/Users/simonhong/Projects/brave/brave-browser-new/src/brave/script/redirect-cc.py ../../third_party/llvm-build/Release+Asserts/bin/clang++ -MMD -MF obj/base/base/foundation_util.o.d -DSYSTEM_NATIVE_UTF8 -DBRAVE_CHROMIUM_BUILD -DV8_DEPRECATION_WARNINGS -DNO_TCMALLOC -DFULL_SAFE_BROWSING -DSAFE_BROWSING_CSD -DSAFE_BROWSING_DB_LOCAL -DOFFICIAL_BUILD -DCHROMIUM_BUILD -DFIELDTRIAL_TESTING_ENABLED -D_LIBCPP_HAS_NO_ALIGNED_ALLOCATION -DCR_XCODE_VERSION=0941 -DCR_CLANG_REVISION=\"337439-1\" -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D_FORTIFY_SOURCE=2 -D__ASSERT_MACROS_DEFINE_VERSIONS_WITHOUT_UNDERSCORE=0 -DNDEBUG -DNVALGRIND -DDYNAMIC_ANNOTATIONS_ENABLED=0 -DBASE_IMPLEMENTATION -I../../brave/chromium_src -I. -I../.. -Igen -fno-strict-aliasing -fstack-protector -fcolor-diagnostics -fmerge-all-constants -Xclang -mllvm -Xclang -instcombine-lower-dbg-declare=0 -no-canonical-prefixes -arch x86_64 -Wall -Werror -Wextra -Wimplicit-fallthrough -Wthread-safety -Wunguarded-availability -Wno-missing-field-initializers -Wno-unused-parameter -Wno-c++11-narrowing -Wno-covered-switch-default -Wno-unneeded-internal-declaration -Wno-undefined-var-template -Wno-address-of-packed-member -Wno-nonportable-include-path -Wno-user-defined-warnings -Wno-unused-lambda-capture -Wno-null-pointer-arithmetic -Wno-enum-compare-switch -Wno-ignored-pragma-optimize -fno-omit-frame-pointer -gdwarf-2 -fno-standalone-debug -isysroot ../../../../../../../../Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk -mmacosx-version-min=10.9.0 -fvisibility=hidden -Xclang -load -Xclang ../../third_party/llvm-build/Release+Asserts/lib/libFindBadConstructs.dylib -Xclang -add-plugin -Xclang find-bad-constructs -Xclang -plugin-arg-find-bad-constructs -Xclang enforce-in-thirdparty-webkit -Xclang -plugin-arg-find-bad-constructs -Xclang check-enum-max-value -Wheader-hygiene -Wstring-conversion -Wtautological-overlap-compare -Wno-char-subscripts -Wglobal-constructors -Wexit-time-destructors -Wexit-time-destructors -Wshadow -Wexit-time-destructors -O2 -std=c++14 -stdlib=libc++ -fobjc-call-cxx-cdtors -Wobjc-missing-property-synthesis -fno-exceptions -fno-rtti -fvisibility-inlines-hidden -c ../../base/mac/foundation_util.mm -o obj/base/base/foundation_util.o
/Users/simonhong/Projects/brave/brave-browser-new/src/brave/chromium_src/base/mac/foundation_util.mm:22:11: error: use of undeclared identifier 'chrome'
  switch (chrome::GetChannel()) {
          ^
1 error generated.
[29/994] ACTION //brave/vendor/brave-extension:brave-extension(//build/toolchain/mac:clang_x64)
ninja: build stopped: subcommand failed.
null
null
error An unexpected error occurred: "Command failed.
Exit code: 1
Command: sh
Arguments: -c node ./scripts/commands.js build Release
Directory: /Users/simonhong/Projects/brave/brave-browser-new
Output: