Add a presubmit check for tabs in grd files.

Review URL: https://chromiumcodereview.appspot.com/19741006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@214530 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/PRESUBMIT.py b/PRESUBMIT.py
index efb665a..0b1f6c7f0 100644
--- a/PRESUBMIT.py
+++ b/PRESUBMIT.py
@@ -834,6 +834,11 @@
   results.extend(_CheckNoAbbreviationInPngFileName(input_api, output_api))
   results.extend(_CheckForInvalidOSMacros(input_api, output_api))
   results.extend(_CheckAddedDepsHaveTargetApprovals(input_api, output_api))
+  results.extend(
+      input_api.canned_checks.CheckChangeHasNoTabs(
+          input_api,
+          output_api,
+          source_file_filter=lambda x: x.LocalPath().endswith('.grd')))
 
   if any('PRESUBMIT.py' == f.LocalPath() for f in input_api.AffectedFiles()):
     results.extend(input_api.canned_checks.RunUnitTestsInDirectory(