cc: Stop warning about virtual+override until we can remove the virtuals

This is making people ignore other presubmit warnings in all the noise.

R=ajuma, enne, vmpstr

Review URL: https://codereview.chromium.org/639183005

Cr-Commit-Position: refs/heads/master@{#299132}

cc/PRESUBMIT.py

@@ -21,6 +21,10 @@ def CheckChangeLintsClean(input_api, output_api):
            input_api.AffectedSourceFiles(source_filter)]
   level = 1  # strict, but just warn
 
+  # TODO(danakj): Temporary, while the OVERRIDE and FINAL fixup is in progress.
+  # crbug.com/422353
+  input_api.cpplint._SetFilters('-readability/inheritance')
+
   for file_name in files:
     input_api.cpplint.ProcessFile(file_name, level)