Update protocol

source/ChromeDevTools/Protocol/iOS/Page/CoordinateSystem.cs

 using MasterDevs.ChromeDevTools;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
+using System.Runtime.Serialization;
+
 
 namespace MasterDevs.ChromeDevTools.Protocol.iOS.Page{
 	/// <summary>
 	/// Coordinate system used by supplied coordinates.
 	/// </summary>
+	[JsonConverter(typeof(StringEnumConverter))]
 	public enum CoordinateSystem
 	{
 			Viewport,

source/ChromeDevTools/Protocol/iOS/Page/ResourceType.cs

 using MasterDevs.ChromeDevTools;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
+using System.Runtime.Serialization;
+
 
 namespace MasterDevs.ChromeDevTools.Protocol.iOS.Page{
 	/// <summary>
 	/// Resource type as it was perceived by the rendering engine.
 	/// </summary>
+	[JsonConverter(typeof(StringEnumConverter))]
 	public enum ResourceType
 	{
 			Document,

source/ChromeDevTools/Protocol/iOS/Runtime/SyntaxErrorType.cs

 using MasterDevs.ChromeDevTools;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
+using System.Runtime.Serialization;
+
 
 namespace MasterDevs.ChromeDevTools.Protocol.iOS.Runtime{
 	/// <summary>
 	/// Syntax error type: "none" for no error, "irrecoverable" for unrecoverable errors, "unterminated-literal" for when there is an unterminated literal, "recoverable" for when the expression is unfinished but valid so far.
 	/// </summary>
+	[JsonConverter(typeof(StringEnumConverter))]
 	public enum SyntaxErrorType
 	{
 			None,
 			Irrecoverable,
+			[EnumMember(Value = "unterminated-literal")]
 			Unterminated_literal,
 			Recoverable,
 	}

source/ChromeDevTools/Protocol/iOS/Timeline/EventType.cs

 using MasterDevs.ChromeDevTools;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
+using System.Runtime.Serialization;
+
 
 namespace MasterDevs.ChromeDevTools.Protocol.iOS.Timeline{
 	/// <summary>
 	/// Timeline record type.
 	/// </summary>
+	[JsonConverter(typeof(StringEnumConverter))]
 	public enum EventType
 	{
 			EventDispatch,