Add a landmine to fix builders after blink_resources.grd changed

I will send a PSA to chromium-dev shortly explaining the issue.

BUG=338338, 400860
NOTRY=true

Review URL: https://codereview.chromium.org/441133002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@287640 0039d316-1c4b-4281-b951-d872f2087c98

build/get_landmines.py

@@ -57,6 +57,7 @@ def print_landmines(target):
     print 'Clobber to rebuild GN files for V8'
   print 'Need to clobber everything due to build_nexe change in nacl r13424'
   print '[chromium-dev] PSA: clobber build needed for IDR_INSPECTOR_* compil...'
+  print 'blink_resources.grd changed: crbug.com/400860'
 
 
 def main():