Update //third_party/protobuf to version 3.

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

+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: google/protobuf/struct.proto
+
+#import "GPBProtocolBuffers.h"
+
+#if GOOGLE_PROTOBUF_OBJC_GEN_VERSION != 30000
+#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)
+
+CF_EXTERN_C_BEGIN
+
+@class GPBListValue;
+@class GPBStruct;
+
+NS_ASSUME_NONNULL_BEGIN
+
+#pragma mark - Enum GPBNullValue
+
+// `NullValue` is a singleton enumeration to represent the null value for the
+// `Value` type union.
+//
+//  The JSON representation for `NullValue` is JSON `null`.
+typedef GPB_ENUM(GPBNullValue) {
+  GPBNullValue_GPBUnrecognizedEnumeratorValue = kGPBUnrecognizedEnumeratorValue,
+  // Null value.
+  GPBNullValue_NullValue = 0,
+};
+
+GPBEnumDescriptor *GPBNullValue_EnumDescriptor(void);
+
+BOOL GPBNullValue_IsValidValue(int32_t value);
+
+#pragma mark - GPBStructRoot
+
+@interface GPBStructRoot : GPBRootObject
+
+// The base class provides:
+//   + (GPBExtensionRegistry *)extensionRegistry;
+// which is an GPBExtensionRegistry that includes all the extensions defined by
+// this file and all files that it depends on.
+
+@end
+
+#pragma mark - GPBStruct
+
+typedef GPB_ENUM(GPBStruct_FieldNumber) {
+  GPBStruct_FieldNumber_Fields = 1,
+};
+
+// `Struct` represents a structured data value, consisting of fields
+// which map to dynamically typed values. In some languages, `Struct`
+// might be supported by a native representation. For example, in
+// scripting languages like JS a struct is represented as an
+// object. The details of that representation are described together
+// with the proto support for the language.
+//
+// The JSON representation for `Struct` is JSON object.
+@interface GPBStruct : GPBMessage
+
+// Map of dynamically typed values.
+// |fields| values are |GPBValue|
+@property(nonatomic, readwrite, strong, null_resettable) NSMutableDictionary *fields;
+@property(nonatomic, readonly) NSUInteger fields_Count;
+
+@end
+
+#pragma mark - GPBValue
+
+typedef GPB_ENUM(GPBValue_FieldNumber) {
+  GPBValue_FieldNumber_NullValue = 1,
+  GPBValue_FieldNumber_NumberValue = 2,
+  GPBValue_FieldNumber_StringValue = 3,
+  GPBValue_FieldNumber_BoolValue = 4,
+  GPBValue_FieldNumber_StructValue = 5,
+  GPBValue_FieldNumber_ListValue = 6,
+};
+
+typedef GPB_ENUM(GPBValue_Kind_OneOfCase) {
+  GPBValue_Kind_OneOfCase_GPBUnsetOneOfCase = 0,
+  GPBValue_Kind_OneOfCase_NullValue = 1,
+  GPBValue_Kind_OneOfCase_NumberValue = 2,
+  GPBValue_Kind_OneOfCase_StringValue = 3,
+  GPBValue_Kind_OneOfCase_BoolValue = 4,
+  GPBValue_Kind_OneOfCase_StructValue = 5,
+  GPBValue_Kind_OneOfCase_ListValue = 6,
+};
+
+// `Value` represents a dynamically typed value which can be either
+// null, a number, a string, a boolean, a recursive struct value, or a
+// list of values. A producer of value is expected to set one of that
+// variants, absence of any variant indicates an error.
+//
+// The JSON representation for `Value` is JSON value.
+@interface GPBValue : GPBMessage
+
+// The kind of value.
+@property(nonatomic, readonly) GPBValue_Kind_OneOfCase kindOneOfCase;
+
+// Represents a null value.
+@property(nonatomic, readwrite) GPBNullValue nullValue;
+
+// Represents a double value.
+@property(nonatomic, readwrite) double numberValue;
+
+// Represents a string value.
+@property(nonatomic, readwrite, copy, null_resettable) NSString *stringValue;
+
+// Represents a boolean value.
+@property(nonatomic, readwrite) BOOL boolValue;
+
+// Represents a structured value.
+@property(nonatomic, readwrite, strong, null_resettable) GPBStruct *structValue;
+
+// Represents a repeated `Value`.
+@property(nonatomic, readwrite, strong, null_resettable) GPBListValue *listValue;
+
+@end
+
+int32_t GPBValue_NullValue_RawValue(GPBValue *message);
+void SetGPBValue_NullValue_RawValue(GPBValue *message, int32_t value);
+
+void GPBValue_ClearKindOneOfCase(GPBValue *message);
+
+#pragma mark - GPBListValue
+
+typedef GPB_ENUM(GPBListValue_FieldNumber) {
+  GPBListValue_FieldNumber_ValuesArray = 1,
+};
+
+// `ListValue` is a wrapper around a repeated field of values.
+//
+// The JSON representation for `ListValue` is JSON array.
+@interface GPBListValue : GPBMessage
+
+// Repeated field of dynamically typed values.
+// |valuesArray| contains |GPBValue|
+@property(nonatomic, readwrite, strong, null_resettable) NSMutableArray *valuesArray;
+@property(nonatomic, readonly) NSUInteger valuesArray_Count;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+CF_EXTERN_C_END
+
+// @@protoc_insertion_point(global_scope)