Moved native/request.Protocol (copied from openrtb.Protocol) to native.Protocol (for consistency)

native/protocol.go

@@ -1,8 +1,10 @@
-package request
+package native
 
 // 5.8 Protocols (from OpenRTB spec 2.5)
 //
 // Options for the various bid response protocols that could be supported by an exchange.
+//
+// Dev note: this enum is copied to native package to allow requiring native/{request,response} in root openrtb package in future.
 type Protocol int8
 
 const (

native/request/video.go

@@ -1,6 +1,10 @@
 package request
 
-import "encoding/json"
+import (
+	"encoding/json"
+
+	"github.com/mxmCherry/openrtb/native"
+)
 
 // 4.5 Video Object
 //
@@ -51,7 +55,7 @@ type Video struct {
 	// Description:
 	//   An array of video protocols the publisher can accept in the bid response.
 	//   See OpenRTB Table ‘Video Bid Response Protocols’ for a list of possible values.
-	Protocols []Protocol `json:"protocols"`
+	Protocols []native.Protocol `json:"protocols"`
 
 	// Field:
 	//   ext