[build] Landmine for flaky win compile problems.

BUG=chromium:668958
TBR=jochen@chromium.org

Review-Url: https://codereview.chromium.org/2531183002
Cr-Commit-Position: refs/heads/master@{#41296}

gypfiles/get_landmines.py

@@ -31,6 +31,7 @@ def main():
   print 'Clober to fix windows build problems.'
   print 'Clober again to fix windows build problems.'
   print 'Clobber to possibly resolve failure on win-32 bot.'
+  print 'Clobber for http://crbug.com/668958.'
   return 0