Add GDPR support for ucfunnel adapter (prebid#2619)

* Add a new ucfunnel Adapter and test page

* Add a new ucfunnel Adapter and test page

* 1. Use prebid lib in the repo to keep updated
2. Replace var with let
3. Put JSON.parse(JSON.stringify()) into try catch block

* utils.getTopWindowLocation is a function

* Change to modules from adapters

* Migrate to module design

* [Dev Fix] Remove width and height which can be got from ad unit id

* Update ucfunnelBidAdapter to fit into new spec

* Correct the endpoint. Fix the error of query string

* Add test case for ucfunnelBidAdapter

* Fix lint error

* Update version number

* Combine all checks on bid request

* Add GDPR support for ucfunnel adapter

modules/ucfunnelBidAdapter.js

@@ -19,16 +19,16 @@ export const spec = {
   },
 
   /**
-   * Format the bid request object for our endpoint
-   * @param {BidRequest[]} bidRequests Array of ucfunnel bidders
-   * @return object of parameters for Prebid AJAX request
+   * @param {BidRequest[]} bidRequests
+   * @param {*} bidderRequest
+   * @return {ServerRequest}
    */
-  buildRequests: function(validBidRequests) {
+  buildRequests: function(validBidRequests, bidderRequest) {
     var bidRequests = [];
     for (var i = 0; i < validBidRequests.length; i++) {
       var bid = validBidRequests[i];
 
-      var ucfunnelUrlParams = buildUrlParams(bid);
+      var ucfunnelUrlParams = buildUrlParams(bid, bidderRequest);
 
       bidRequests.push({
         method: 'GET',
@@ -69,7 +69,7 @@ export const spec = {
 };
 registerBidder(spec);
 
-function buildUrlParams(bid) {
+function buildUrlParams(bid, bidderRequest) {
   const host = utils.getTopWindowLocation().host;
   const page = utils.getTopWindowLocation().pathname;
   const refer = document.referrer;
@@ -88,6 +88,11 @@ function buildUrlParams(bid) {
     'ver', VER
   ];
 
+  if (bidderRequest && bidderRequest.gdprConsent) {
+    queryString.push('gdpr', bidderRequest.gdprConsent.gdprApplies ? 1 : 0);
+    queryString.push('euconsent', bidderRequest.gdprConsent.consentString);
+  }
+
   return queryString.reduce(
     (memo, curr, index) =>
       index % 2 === 0 && queryString[index + 1] !== undefined ? memo + curr + '=' + encodeURIComponent(queryString[index + 1]) + '&' : memo, ''