| Index: tools/gn/header_checker.cc
 | 
| diff --git a/tools/gn/header_checker.cc b/tools/gn/header_checker.cc
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| index 1141e6efd6ac73eca9e90383bc53eb38229b12d0..b15b4fa16b2b88aaf91d57426adf8a225c6f9a0d 100644
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| --- a/tools/gn/header_checker.cc
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| +++ b/tools/gn/header_checker.cc
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| @@ -37,7 +37,8 @@ struct PublicGeneratedPair {
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|  SourceFile RemoveRootGenDirFromFile(const Target* target,
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|                                      const SourceFile& file) {
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|    const SourceDir& gen = target->settings()->toolchain_gen_dir();
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| -  if (!gen.is_null() && base::StartsWithASCII(file.value(), gen.value(), true))
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| +  if (!gen.is_null() && base::StartsWith(file.value(), gen.value(),
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| +                                         base::CompareCase::SENSITIVE))
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|      return SourceFile("//" + file.value().substr(gen.value().size()));
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|    return file;
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|  }
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| 
 |