Remove unused errno parsing for leveldb status codes

third_party/leveldatabase/env_chromium.h

Index: third_party/leveldatabase/env_chromium.h
diff --git a/third_party/leveldatabase/env_chromium.h b/third_party/leveldatabase/env_chromium.h
index 447e1df936965ac491463c5b06218d6b5ffa957b..6fb7180f55079bae2f8165e67263ea11efffcbc6 100644
--- a/third_party/leveldatabase/env_chromium.h
+++ b/third_party/leveldatabase/env_chromium.h
@@ -60,13 +60,12 @@ leveldb::Status MakeIOError(leveldb::Slice filename,
 enum ErrorParsingResult {
   METHOD_ONLY,
   METHOD_AND_PFE,
-  METHOD_AND_ERRNO,
   NONE,
 };
 
 ErrorParsingResult ParseMethodAndError(const leveldb::Status& status,
                                        MethodID* method,
-                                       int* error);
+                                       base::File::Error* error);
 int GetCorruptionCode(const leveldb::Status& status);
 int GetNumCorruptionCodes();
 std::string GetCorruptionMessage(const leveldb::Status& status);