Sort tabs by most recent active time

This CL needs to be checked in before the related CL to prevent a revert
due to src-internal build test breakage.

Related CL: https://chromium-review.googlesource.com/c/chromium/src/+/2382655
Bug: 1099917
Change-Id: Id79e1fa21be1bf0bdea52aa902f6685d8c985a4a
Reviewed-on: https://chrome-internal-review.googlesource.com/c/chrome/browser/resources/tab_search/+/3261333Reviewed-by: Roman Arora <romanarora@chromium.org>
Cr-Commit-Position: refs/heads/master@{#819593}

chrome/browser/resources/tab_search_merge/app.js

@@ -288,6 +288,9 @@ export class TabSearchAppElement extends PolymerElement {
             })
             .flat() :
         windowTabs.map(window => window.tabs).flat();
+    this.filteredOpenTabs_.sort((a, b) => (b.lastActiveTimeTicks && a.lastActiveTimeTicks) ?
+        b.lastActiveTimeTicks.internalValue - a.lastActiveTimeTicks.internalValue :
+        0);
   }
 }
 

chrome/browser/resources/tab_search_merge/test/tab_search_app_test.js

@@ -267,6 +267,7 @@ suite('TabSearchAppTest', () => {
       favIconUrl: '',
       title: 'Example',
       url: 'https://example.com',
+      lastActiveTimeTicks: { internalValue: 1 },
     });
     testProxy.getCallbackRouterRemote().tabUpdated(updatedTab);
     await flushTasks();
@@ -387,4 +388,35 @@ suite('TabSearchAppTest', () => {
     feedbackButton.click();
     await testProxy.whenCalled('showFeedbackPage');
   });
+
+  test('Sort by most recent active tabs', async () => {
+    const tabs = [
+    {
+      index: 0,
+      tabId: 1,
+      favIconUrl: '',
+      title: 'Google',
+      url: 'https://www.google.com',
+      lastActiveTimeTicks: { internalValue: 2 },
+    },
+    {
+      index: 1,
+      tabId: 2,
+      favIconUrl: '',
+      title: 'Bing',
+      url: 'https://www.bing.com',
+      lastActiveTimeTicks: { internalValue: 4 },
+    },
+    {
+      index: 2,
+      tabId: 3,
+      favIconUrl: '',
+      title: 'Yahoo',
+      url: 'https://www.yahoo.com',
+      lastActiveTimeTicks: { internalValue: 3 },
+    }];
+
+    await setupTest({windows: [{active: true, tabs}]});
+    verifyTabIds(queryRows(), [2, 3, 1]);
+  });
 });