[ChromeCart] Add title to cart module

Bug: 1157892
Change-Id: Ie368637aa8e9d778a80aae248aa7cb05064d285c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2625911
Commit-Queue: Yue Zhang <yuezhanggg@chromium.org>
Commit-Queue: Tibor Goldschwendt <tiborg@chromium.org>
Auto-Submit: Yue Zhang <yuezhanggg@chromium.org>
Reviewed-by: Tibor Goldschwendt <tiborg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#843340}

chrome/browser/resources/new_tab_page/modules/cart/module.html

@@ -132,6 +132,7 @@
 <ntp-module-header
     chip-text="$i18n{modulesCartHeaderNew}"
     show-dismiss-button on-dismiss-button-click="onDismissButtonClick_">
+  $i18n{modulesCartTitle}
 </ntp-module-header>
 <div id="moduleContent">
   <template id="cartItemRepeat" is="dom-repeat" items="[[cartItems]]">