Added support for dChain

Author: pm-azhar-mulla

modules/pubmaticBidAdapter.js

@@ -1021,7 +1021,9 @@ export function prepareMetaObject(br, bid, seat) {
   // if (bid.ext.advertiserName) br.meta.advertiserName = bid.ext.advertiserName;
   // if (bid.ext.agencyName) br.meta.agencyName = bid.ext.agencyName;
   // if (bid.ext.brandName) br.meta.brandName = bid.ext.brandName;
-  // if (bid.ext.dchain) br.meta.dchain = bid.ext.dchain;
+  if (bid.ext && bid.ext.dchain) {
+    br.meta.dchain = bid.ext.dchain;
+  }
 
   const advid = seat || (bid.ext && bid.ext.advid);
   if (advid) {

test/spec/modules/pubmaticBidAdapter_spec.js

@@ -4646,7 +4646,7 @@ describe('PubMatic adapter', function () {
           // agencyName: 'agnm',
           // brandId: 'brid',
           // brandName: 'brnm',
-          // dchain: 'dc',
+          dchain: 'dc',
           // demandSource: 'ds',
           // secondaryCatIds: ['secondaryCatIds']
         }
@@ -4664,7 +4664,7 @@ describe('PubMatic adapter', function () {
       // expect(br.meta.agencyName).to.equal('agnm');
       expect(br.meta.brandId).to.equal('mystartab.com');
       // expect(br.meta.brandName).to.equal('brnm');
-      // expect(br.meta.dchain).to.equal('dc');
+      expect(br.meta.dchain).to.equal('dc');
       expect(br.meta.demandSource).to.equal(6);
       expect(br.meta.secondaryCatIds).to.be.an('array').with.length.above(0);
       expect(br.meta.secondaryCatIds[0]).to.equal('IAB_CATEGORY');