[build] Landmine after ndk update.

Bots broke after https://codereview.chromium.org/2040913002/

BUG=chromium:599327
NOTRY=true
NOPRESUBMIT=true
TBR=bmeurer@chromium.org

Review-Url: https://codereview.chromium.org/2044013002
Cr-Commit-Position: refs/heads/master@{#36771}

gypfiles/get_landmines.py

@@ -27,6 +27,7 @@ def main():
   print 'Switching to pinned msvs toolchain.'
   print 'Clobbering to hopefully resolve problem with mksnapshot'
   print 'Clobber after ICU roll.'
+  print 'Clobber after Android NDK update.'
   return 0