Reverts third_party/protobuf: Update to HEAD (f52e188fe4)

third_party/protobuf/ruby/ext/google/protobuf_c/protobuf.h

 // Protocol Buffers - Google's data interchange format
 // Copyright 2014 Google Inc.  All rights reserved.
 // https://developers.google.com/protocol-buffers/
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
@@ skipping 148 matching lines @@
 extern VALUE cFieldDescriptor;
 extern VALUE cEnumDescriptor;
 extern VALUE cMessageBuilderContext;
 extern VALUE cOneofBuilderContext;
 extern VALUE cEnumBuilderContext;
 extern VALUE cBuilder;
 
 extern VALUE cError;
 extern VALUE cParseError;
 
-extern VALUE map_parse_frames;
-
 // We forward-declare all of the Ruby method implementations here because we
 // sometimes call the methods directly across .c files, rather than going
 // through Ruby's method dispatching (e.g. during message parse). It's cleaner
 // to keep the list of object methods together than to split them between
 // static-in-file definitions and header declarations.
 
 void DescriptorPool_mark(void* _self);
 void DescriptorPool_free(void* _self);
 VALUE DescriptorPool_alloc(VALUE klass);
 void DescriptorPool_register(VALUE module);
@@ skipping 127 matching lines @@
                                     uint32_t case_number);
 VALUE native_slot_get(upb_fieldtype_t type,
                       VALUE type_class,
                       const void* memory);
 void native_slot_init(upb_fieldtype_t type, void* memory);
 void native_slot_mark(upb_fieldtype_t type, void* memory);
 void native_slot_dup(upb_fieldtype_t type, void* to, void* from);
 void native_slot_deep_copy(upb_fieldtype_t type, void* to, void* from);
 bool native_slot_eq(upb_fieldtype_t type, void* mem1, void* mem2);
 
-VALUE native_slot_encode_and_freeze_string(upb_fieldtype_t type, VALUE value);
+void native_slot_validate_string_encoding(upb_fieldtype_t type, VALUE value);
 void native_slot_check_int_range_precision(upb_fieldtype_t type, VALUE value);
 
 extern rb_encoding* kRubyStringUtf8Encoding;
 extern rb_encoding* kRubyStringASCIIEncoding;
 extern rb_encoding* kRubyString8bitEncoding;
 
 VALUE field_type_class(const upb_fielddef* field);
 
 #define MAP_KEY_FIELD 1
 #define MAP_VALUE_FIELD 2
@@ skipping 32 matching lines @@
 void RepeatedField_register(VALUE module);
 
 extern const rb_data_type_t RepeatedField_type;
 extern VALUE cRepeatedField;
 
 RepeatedField* ruby_to_RepeatedField(VALUE value);
 
 VALUE RepeatedField_each(VALUE _self);
 VALUE RepeatedField_index(int argc, VALUE* argv, VALUE _self);
 void* RepeatedField_index_native(VALUE _self, int index);
-int RepeatedField_size(VALUE _self);
 VALUE RepeatedField_index_set(VALUE _self, VALUE _index, VALUE val);
 void RepeatedField_reserve(RepeatedField* self, int new_size);
 VALUE RepeatedField_push(VALUE _self, VALUE val);
 void RepeatedField_push_native(VALUE _self, void* data);
 VALUE RepeatedField_pop_one(VALUE _self);
 VALUE RepeatedField_insert(int argc, VALUE* argv, VALUE _self);
 VALUE RepeatedField_replace(VALUE _self, VALUE list);
 VALUE RepeatedField_clear(VALUE _self);
 VALUE RepeatedField_length(VALUE _self);
 VALUE RepeatedField_dup(VALUE _self);
@@ skipping 150 matching lines @@
 
 #define CHECK_UPB(code, msg) do {                                             \
     upb_status status = UPB_STATUS_INIT;                                      \
     code;                                                                     \
     check_upb_status(&status, msg);                                           \
 } while (0)
 
 extern ID descriptor_instancevar_interned;
 
 #endif  // __GOOGLE_PROTOBUF_RUBY_PROTOBUF_H__