Removed GPR_POSIX_FILE, and changed the files that used it
diff --git a/grpc.gemspec b/grpc.gemspec
index bb7913b..d231bf1 100755
--- a/grpc.gemspec
+++ b/grpc.gemspec
@@ -452,8 +452,7 @@
s.files += %w( src/core/lib/security/credentials/credentials.c )
s.files += %w( src/core/lib/security/credentials/credentials_metadata.c )
s.files += %w( src/core/lib/security/credentials/fake/fake_credentials.c )
- s.files += %w( src/core/lib/security/credentials/google_default/credentials_posix.c )
- s.files += %w( src/core/lib/security/credentials/google_default/credentials_windows.c )
+ s.files += %w( src/core/lib/security/credentials/google_default/credentials_generic.c )
s.files += %w( src/core/lib/security/credentials/google_default/google_default_credentials.c )
s.files += %w( src/core/lib/security/credentials/iam/iam_credentials.c )
s.files += %w( src/core/lib/security/credentials/jwt/json_token.c )