pages/search: prevent history pollution

background.js

@@ -2,3 +2,16 @@ browser.action.onClicked.addListener((() =>
   browser.tabs.create({
     url: '/pages/search/search.html'
   })))
+
+browser.runtime.onMessage.addListener((message, sender) => {
+  switch (message.action) {
+    case 'closeSender':
+      Promise.resolve()
+        .then(() => browser.tabs.remove(sender.tab.id))
+        .then(() => browser.sessions.getRecentlyClosed({maxResults: 1}))
+        .then(([sessionInfo]) => browser.sessions.forgetClosedTab(
+          sessionInfo.tab.windowId,
+          sessionInfo.tab.sessionId))
+      break
+  }
+})