Always process landmines, even if GYP_CHROMIUM_NO_ACTION is set

R=machenbach@chromium.org
BUG=none

Review URL: https://codereview.chromium.org/314933004

git-svn-id: http://src.chromium.org/svn/trunk/src/build@274762 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

gyp_chromium

@@ -190,6 +190,10 @@ if __name__ == '__main__':
   args = sys.argv[1:]
 
   if int(os.environ.get('GYP_CHROMIUM_NO_ACTION', 0)):
+    # Check for landmines (reasons to clobber the build) in any case.
+    print 'Running build/landmines.py...'
+    subprocess.check_call(
+        [sys.executable, os.path.join(script_dir, 'landmines.py')])
     print 'Skipping gyp_chromium due to GYP_CHROMIUM_NO_ACTION env var.'
     sys.exit(0)