Chrome Version       : 56.0.2914.3
OS Version: OS X 10.12.1

waterfall failure at 

https://build.chromium.org/p/chromium.memory.full/builders/Chromium%20Linux%20ChromeOS%20MSan%20Builder/builds/3226/

Maybe due to r420561 "Turn //mojo/public/cpp/bindings and //mojo/public/cpp/system into components"

Error:

[25942/26897] AR newlib_pnacl_nonsfi/obj/mojo/public/cpp/bindings/libbindings.a
FAILED: newlib_pnacl_nonsfi/obj/mojo/public/cpp/bindings/libbindings.a 
python "../../build/toolchain/gcc_ar_wrapper.py"  --output=newlib_pnacl_nonsfi/obj/mojo/public/cpp/bindings/libbindings.a --ar="../../native_client/toolchain/linux_x86/pnacl_newlib/bin/pnacl-ar"  rcsD @"newlib_pnacl_nonsfi/obj/mojo/public/cpp/bindings/libbindings.a.rsp"
/b/c/b/Chromium_Linux_ChromeOS_MSan_Builder/src/native_client/toolchain/linux_x86/pnacl_newlib/bin/arm-nacl-ar: newlib_pnacl_nonsfi/obj/mojo/public/cpp/bindings/bindings/control_message_proxy.o: No such file or directory