[PATCH] D20814: [include-fixer] Rank symbols based on the number of occurrences we found while merging.

[Benjamin Kramer via cfe-commits]

bkramer created this revision.
bkramer added reviewers: ioeric, djasper.
bkramer added a subscriber: cfe-commits.

This sorts based on the popularity of the header, not the symbol. If
there are mutliple matching symbols in one header we take the maximum
popularity for that header and deduplicate. If we know nothing we sort
lexicographically based on the header path.

http://reviews.llvm.org/D20814

Files:
  include-fixer/SymbolIndexManager.cpp
  include-fixer/tool/ClangIncludeFixer.cpp
  test/include-fixer/Inputs/fake_yaml_db.yaml
  test/include-fixer/ranking.cpp

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