AutoDiscardable property support on Chrome Extensions Tabs API.

chrome/test/data/extensions/api_test/tabs/basics/autoDiscardable.js

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+var testTab;
+chrome.test.runTests([
+
+    function setupWindow() {
+      var testTabId;
+
+      createWindow(["about:blank", "chrome://newtab/"], {},
+                   pass(function(winId, tabIds) {
+        testTabId = tabIds[1];
+      }));
+
+      waitForAllTabs(pass(function() {
+        queryForTab(testTabId, {}, pass(function(tab) {
+          testTab = tab;
+        }));
+      }));
+    },
+
+    function setNonAutoDiscardable() {
+      // Initially the tab is auto-discardable.
+      assertTrue(testTab.autoDiscardable);
+
+      var onUpdatedCompleted = chrome.test.listenForever(
+          chrome.tabs.onUpdated,
+          function(tabId, changeInfo, tab) {
+        if ('autoDiscardable' in changeInfo) {
+          // Make sure it's the right tab.
+          assertEq(testTab.id, tab.id);
+
+          // Make sure the auto-discardable state changed correctly.
+          assertFalse(changeInfo.autoDiscardable);
+          assertFalse(tab.autoDiscardable);
+
+          onUpdatedCompleted();
+        }
+      });
+
+      chrome.tabs.update(testTab.id, { autoDiscardable: false },
+                         pass(function (tab) {
+        assertFalse(tab.autoDiscardable);
+        testTab = tab;
+      }));
+    },
+
+  function resetAutoDiscardable() {

[chrisha, 2016/08/02 14:40:06]

Another +2 indent here as well?

[Anderson Silva, 2016/08/02 15:02:43]

Done.

+    // Tab was set to non auto-discardable.
+    assertFalse(testTab.autoDiscardable);
+
+    var onUpdatedCompleted = chrome.test.listenForever(
+        chrome.tabs.onUpdated,
+        function(tabId, changeInfo, tab) {
+          if ('autoDiscardable' in changeInfo) {
+            // Make sure it's the right tab.
+            assertEq(testTab.id, tab.id);
+
+            // Make sure the auto-discardable state changed correctly.
+            assertTrue(changeInfo.autoDiscardable);
+            assertTrue(tab.autoDiscardable);
+
+            onUpdatedCompleted();
+          }
+        });
+
+    chrome.tabs.update(testTab.id, { autoDiscardable: true },
+                       pass(function (tab) {
+      assertTrue(tab.autoDiscardable);
+    }));
+  }
+]);