UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36

Steps to reproduce the problem:
1. Compile chromium LKGR on windows with these gn flags:
chrome_pgo_phase = 0
current_cpu = "x64"
enable_google_now = false
enable_ac3_eac3_audio_demuxing = true
enable_hevc_demuxing = true
enable_hotwording = false
enable_iterator_debugging = false
enable_nacl = true
exclude_unwind_tables = true
ffmpeg_branding = "Chrome"
is_component_build = false
is_debug = false
is_win_fastlink = true
proprietary_codecs = true
remove_webcore_debug_symbols = true
symbol_level = 0
target_cpu = "x64"
enable_remoting = false
enable_webrtc = false
google_api_key = "no"
google_default_client_id = "no"
google_default_client_secret = "no"
rtc_use_h264 = false
rtc_use_lto = false
use_official_google_api_keys = false
use_openh264 = false
full_wpo_on_official = true
is_official_build = true
2. Let it run
3. Finally comes to:

LINK(DLL) chrome.dll chrome.dll.lib
FAILED: chrome.dll chrome.dll.lib
G:/chromium/depot_tools/python276_bin/python.exe ../../build/toolchain/win/tool_wrapper.py link-wrapper environment.x64 False link.exe /nologo /IMPLIB:./chrome.dll.lib /DLL /OUT:./chrome.dll /PDB:./chrome.dll.pdb @./chrome.dll.rsp
obj/chrome/browser/extensions/extensions.lib : fatal error LNK1107: invalid or corrupt file: cannot read at 0x32226D95

What is the expected behavior?
It should finish compiling

What went wrong?
It did not

Did this work before? N/A 

Chrome version: 57.0.2960.0  Channel: dev
OS Version: 10.0
Flash Version: Shockwave Flash 24.0 r0

I've read through some issues similliar to this, heard of "mscv_shard" etc, not sure if this is about that. I'm not a chromium & windows developer.