Linux: apply a different hyphen patch.

base/platform_file.h

Index: base/platform_file.h
diff --git a/base/platform_file.h b/base/platform_file.h
index 1ac40fcd8e04d9dfc98de771d589db0b2b9bd77a..931cb74fb86bf05bdd6375551457e460d6b0b641 100644
--- a/base/platform_file.h
+++ b/base/platform_file.h
@@ -135,6 +135,8 @@ BASE_EXPORT PlatformFile CreatePlatformFileUnsafe(const FilePath& name,
                                                   bool* created,
                                                   PlatformFileError* error);
 
+BASE_EXPORT FILE* FdopenPlatformFile(PlatformFile file, const char* mode);
+
 // Closes a file handle. Returns |true| on success and |false| otherwise.
 BASE_EXPORT bool ClosePlatformFile(PlatformFile file);