Pull new version of protobuf sources.

third_party/protobuf/objectivec/GPBUnknownFieldSet.h

Index: third_party/protobuf/objectivec/GPBUnknownFieldSet.h
diff --git a/third_party/protobuf/src/google/protobuf/unittest_no_generic_services.proto b/third_party/protobuf/objectivec/GPBUnknownFieldSet.h
similarity index 77%
copy from third_party/protobuf/src/google/protobuf/unittest_no_generic_services.proto
copy to third_party/protobuf/objectivec/GPBUnknownFieldSet.h
index cffb4122c5c4f9d2e63a09d70c3784614617d88d..d785ca16e74cb68f5d5a842b1bdcef94dd8ca15d 100644
--- a/third_party/protobuf/src/google/protobuf/unittest_no_generic_services.proto
+++ b/third_party/protobuf/objectivec/GPBUnknownFieldSet.h
@@ -1,6 +1,6 @@
 // Protocol Buffers - Google's data interchange format
 // Copyright 2008 Google Inc.  All rights reserved.
-// http://code.google.com/p/protobuf/
+// 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
@@ -28,25 +28,23 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Author: kenton@google.com (Kenton Varda)
+#import <Foundation/Foundation.h>
 
-package google.protobuf.no_generic_services_test;
+@class GPBUnknownField;
 
-// *_generic_services are false by default.
+NS_ASSUME_NONNULL_BEGIN
 
-message TestMessage {
-  optional int32 a = 1;
-  extensions 1000 to max;
-}
+@interface GPBUnknownFieldSet : NSObject<NSCopying>
 
-enum TestEnum {
-  FOO = 1;
-}
+- (BOOL)hasField:(int32_t)number;
+- (nullable GPBUnknownField *)getField:(int32_t)number;
+- (NSUInteger)countOfFields;
 
-extend TestMessage {
-  optional int32 test_extension = 1000;
-}
+- (void)addField:(GPBUnknownField *)field;
 
-service TestService {
-  rpc Foo(TestMessage) returns(TestMessage);
-}
+// Returns an NSArray of the GPBFields sorted by the field numbers.
+- (NSArray *)sortedFields;
+
+@end
+
+NS_ASSUME_NONNULL_END