Reverts third_party/protobuf: Update to HEAD (f52e188fe4)

third_party/protobuf/ruby/ext/google/protobuf_c/message.c

Index: third_party/protobuf/ruby/ext/google/protobuf_c/message.c
diff --git a/third_party/protobuf/ruby/ext/google/protobuf_c/message.c b/third_party/protobuf/ruby/ext/google/protobuf_c/message.c
index 837a974b8379cb562d095b10783e17b512fefe65..e16250f3b07eddfce44d176fb941e49efef95c25 100644
--- a/third_party/protobuf/ruby/ext/google/protobuf_c/message.c
+++ b/third_party/protobuf/ruby/ext/google/protobuf_c/message.c
@@ -178,45 +178,6 @@ VALUE Message_method_missing(int argc, VALUE* argv, VALUE _self) {
   }
 }
 
-VALUE Message_respond_to_missing(int argc, VALUE* argv, VALUE _self) {
-  MessageHeader* self;
-  VALUE method_name, method_str;
-  char* name;
-  size_t name_len;
-  bool setter;
-  const upb_oneofdef* o;
-  const upb_fielddef* f;
-
-  TypedData_Get_Struct(_self, MessageHeader, &Message_type, self);
-  if (argc < 1) {
-    rb_raise(rb_eArgError, "Expected method name as first argument.");
-  }
-  method_name = argv[0];
-  if (!SYMBOL_P(method_name)) {
-    rb_raise(rb_eArgError, "Expected symbol as method name.");
-  }
-  method_str = rb_id2str(SYM2ID(method_name));
-  name = RSTRING_PTR(method_str);
-  name_len = RSTRING_LEN(method_str);
-  setter = false;
-
-  // Setters have names that end in '='.
-  if (name[name_len - 1] == '=') {
-    setter = true;
-    name_len--;
-  }
-
-  // See if this name corresponds to either a oneof or field in this message.
-  if (!upb_msgdef_lookupname(self->descriptor->msgdef, name, name_len, &f,
-                             &o)) {
-    return rb_call_super(argc, argv);
-  }
-  if (o != NULL) {
-    return setter ? Qfalse : Qtrue;
-  }
-  return Qtrue;
-}
-
 int Message_initialize_kwarg(VALUE key, VALUE val, VALUE _self) {
   MessageHeader* self;
   VALUE method_str;
@@ -344,9 +305,6 @@ VALUE Message_deep_copy(VALUE _self) {
 VALUE Message_eq(VALUE _self, VALUE _other) {
   MessageHeader* self;
   MessageHeader* other;
-  if (TYPE(_self) != TYPE(_other)) {
-    return Qfalse;
-  }
   TypedData_Get_Struct(_self, MessageHeader, &Message_type, self);
   TypedData_Get_Struct(_other, MessageHeader, &Message_type, other);
 
@@ -501,8 +459,6 @@ VALUE build_class_from_descriptor(Descriptor* desc) {
 
   rb_define_method(klass, "method_missing",
                    Message_method_missing, -1);
-  rb_define_method(klass, "respond_to_missing?",
-                   Message_respond_to_missing, -1);
   rb_define_method(klass, "initialize", Message_initialize, -1);
   rb_define_method(klass, "dup", Message_dup, 0);
   // Also define #clone so that we don't inherit Object#clone.