Revert of [NaCl SDK] Remove support for bionic toolchain (patchset #3 id:40001 of https://codereview.chromium.org/1269623004/ )
Reason for revert:
Broke build:
https://build.chromium.org/p/chromium/builders/Linux%20x64/builds/12371
ninja -w dupbuild=err -C /b/build/slave/Linux_x64/build/src/out/Release chrome gn_all -j50
ninja: Entering directory `/b/build/slave/Linux_x64/build/src/out/Release'
[1/1] Regenerating ninja files
ninja: error: '../../native_client_sdk/src/libraries/nacl_io/kernel_wrap_bionic.cc', needed by 'newlib_pnacl/obj/native_client_sdk/src/libraries/nacl_io/nacl_io/kernel_wrap_bionic.o', missing and no known rule to make it
Original issue's description:
> [NaCl SDK] Remove support for bionic toolchain
>
> CQ_EXTRA_TRYBOTS=tryserver.chromium.linux:linux_nacl_sdk;tryserver.chromium.mac:mac_nacl_sdk;tryserver.chromium.win:win_nacl_sdk
>
> Committed: https://crrev.com/2bd1f02649d6fe8b0a5616932e40b67478c58174
> Cr-Commit-Position: refs/heads/master@{#362454}
TBR=binji@chromium.org,sbc@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Review URL: https://codereview.chromium.org/1493443002
Cr-Commit-Position: refs/heads/master@{#362480}
25 files changed
