update ad module. change ad rotation time to 30s

chrome/browser/resources/millix/millix_bar.js

@@ -37,7 +37,7 @@ cr.define('millix_bar', function () {
     let reloadTimeout = undefined;
     let fetchAdvertisementTimeout = undefined;
     let transactionTimestampUpdateTimeout = undefined;
-    const ADVERTISEMENT_ROTATION_TIME = 60000;
+    const ADVERTISEMENT_ROTATION_TIME = 30000;
     const ADVERTISEMENT_ROTATION_TIME_EMPTY = 5000;
     let walletLocked = true;
     let unlockFromBar = false;
@@ -122,12 +122,12 @@ cr.define('millix_bar', function () {
             const aDayAgo = Date.now() - 86400000;
             if (thirtyMinutesAgo > sessionStart && (!!advertisementPaymentTimestampLast && aDayAgo > advertisementPaymentTimestampLast)) {
                 $headline.text('unable to find ads');
-                $targetPhrase.text(`please click "help -> report issue" to resolve`);
+                $targetPhrase.text('please click "help -> report issue" to resolve');
             } else {
-                $headline.text('searching for ad...');
+                $headline.text('searching for ads...');
 
                 if (aMinuteAgo > sessionStart && (!!advertisementPaymentTimestampLast && twoMinutesAgo > advertisementPaymentTimestampLast)) {
-                    $targetPhrase.text(`it has been ${moment(new Date(advertisementPaymentTimestampLast)).fromNow()} since your last ad payment`);
+                    $targetPhrase.text(`your last ad payment was received ${moment(new Date(advertisementPaymentTimestampLast)).fromNow()}`);
                 } else {
                     $targetPhrase.text('');
                 }