cc_unittests failing on 3 builders

Type: build-failure

Builders failed on: 
- Win 7 Tests x64 (1): 
  https://build.chromium.org/p/chromium.win/builders/Win%207%20Tests%20x64%20%281%29
- Win10 Tests x64: 
  https://build.chromium.org/p/chromium.win/builders/Win10%20Tests%20x64
- Win7 Tests (1): 
  https://build.chromium.org/p/chromium.win/builders/Win7%20Tests%20%281%29



reverting https://codereview.chromium.org/2631453002/ to address this