Print Preview refresh: divs not actionable when disabled

Making divs actionable left the hand pointer on them even when they are
disabled. Ensure they are only actionable when not disabled.

Bug: 887823
Change-Id: I35ab8355c7ed10d457e3106cd1639b42eb96fd54
Reviewed-on: https://chromium-review.googlesource.com/1239255Reviewed-by: Hector Carmona <hcarmona@chromium.org>
Commit-Queue: Rebekah Potter <rbpotter@chromium.org>
Cr-Commit-Position: refs/heads/master@{#593348}

chrome/browser/resources/print_preview/new/link_container.html

@@ -36,7 +36,7 @@
         opacity: .65;
       }
     </style>
-    <div class="link" id="systemDialogLink" actionable
+    <div class="link" id="systemDialogLink" actionable$="[[!disabled]]"
          hidden$="[[!shouldShowSystemDialogLink_]]"
          on-click="onSystemDialogClick_">
       <div class="label">$i18n{systemDialogOption}</div>
@@ -50,7 +50,7 @@
           class="throbber"></div>
     </div>
 <if expr="is_macosx">
-    <div class="link" id="openPdfInPreviewLink" actionable
+    <div class="link" id="openPdfInPreviewLink" actionable$="[[!disabled]]"
         on-click="onOpenInPreviewClick_">
       <div class="label">$i18n{openPdfInPreviewOption}</div>
       <paper-icon-button-light actionable class="icon-external"