| Index: base/file_util_posix.cc
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| diff --git a/base/file_util_posix.cc b/base/file_util_posix.cc
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| index da7a09669e396aa4aaf6dce9d27cbe5d35d4ffec..62bc9b3f9b061ced5e1201f1b2ddc405e29f321a 100644
 | 
| --- a/base/file_util_posix.cc
 | 
| +++ b/base/file_util_posix.cc
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| @@ -1132,4 +1132,9 @@ bool VerifyPathControlledByAdmin(const FilePath& path) {
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|  }
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|  #endif  // defined(OS_MACOSX) && !defined(OS_IOS)
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|  
 | 
| +int GetMaximumPathComponentLength(const FilePath& path) {
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| +  base::ThreadRestrictions::AssertIOAllowed();
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| +  return pathconf(path.value().c_str(), _PC_NAME_MAX);
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| +}
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| +
 | 
|  }  // namespace file_util
 | 
| 
 |