Revert "third_party/protobuf: Update to HEAD (83d681ee2c)"

third_party/protobuf/objectivec/google/protobuf/Empty.pbobjc.h

 // Generated by the protocol buffer compiler.  DO NOT EDIT!
 // source: google/protobuf/empty.proto
 
-// This CPP symbol can be defined to use imports that match up to the framework
-// imports needed when using CocoaPods.
-#if !defined(GPB_USE_PROTOBUF_FRAMEWORK_IMPORTS)
- #define GPB_USE_PROTOBUF_FRAMEWORK_IMPORTS 0
-#endif
+#import "GPBProtocolBuffers.h"
 
-#if GPB_USE_PROTOBUF_FRAMEWORK_IMPORTS
- #import <Protobuf/GPBProtocolBuffers.h>
-#else
- #import "GPBProtocolBuffers.h"
-#endif
-
-#if GOOGLE_PROTOBUF_OBJC_VERSION < 30002
-#error This file was generated by a newer version of protoc which is incompatible with your Protocol Buffer library sources.
-#endif
-#if 30002 < GOOGLE_PROTOBUF_OBJC_MIN_SUPPORTED_VERSION
-#error This file was generated by an older version of protoc which is incompatible with your Protocol Buffer library sources.
+#if GOOGLE_PROTOBUF_OBJC_GEN_VERSION != 30001
+#error This file was generated by a different version of protoc which is incompatible with your Protocol Buffer library sources.
 #endif
 
 // @@protoc_insertion_point(imports)
 
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wdeprecated-declarations"
 
 CF_EXTERN_C_BEGIN
 
 NS_ASSUME_NONNULL_BEGIN
 
 #pragma mark - GPBEmptyRoot
 
-/**
- * Exposes the extension registry for this file.
- *
- * The base class provides:
- * @code
- *   + (GPBExtensionRegistry *)extensionRegistry;
- * @endcode
- * which is a @c GPBExtensionRegistry that includes all the extensions defined by
- * this file and all files that it depends on.
- **/
+/// Exposes the extension registry for this file.
+///
+/// The base class provides:
+/// @code
+///   + (GPBExtensionRegistry *)extensionRegistry;
+/// @endcode
+/// which is a @c GPBExtensionRegistry that includes all the extensions defined by
+/// this file and all files that it depends on.
 @interface GPBEmptyRoot : GPBRootObject
 @end
 
 #pragma mark - GPBEmpty
 
-/**
- * A generic empty message that you can re-use to avoid defining duplicated
- * empty messages in your APIs. A typical example is to use it as the request
- * or the response type of an API method. For instance:
- *
- *     service Foo {
- *       rpc Bar(google.protobuf.Empty) returns (google.protobuf.Empty);
- *     }
- *
- * The JSON representation for `Empty` is empty JSON object `{}`.
- **/
+/// A generic empty message that you can re-use to avoid defining duplicated
+/// empty messages in your APIs. A typical example is to use it as the request
+/// or the response type of an API method. For instance:
+///
+///     service Foo {
+///       rpc Bar(google.protobuf.Empty) returns (google.protobuf.Empty);
+///     }
+///
+/// The JSON representation for `Empty` is empty JSON object `{}`.
 @interface GPBEmpty : GPBMessage
 
 @end
 
 NS_ASSUME_NONNULL_END
 
 CF_EXTERN_C_END
 
 #pragma clang diagnostic pop
 
 // @@protoc_insertion_point(global_scope)