From e49ad13fa0e61b4b2acac9e524103325f10b0e21 Mon Sep 17 00:00:00 2001
From: Alison Gale <agale@chromium.org>
Date: Wed, 08 Oct 2025 16:20:46 -0700
Subject: [PATCH] [SxS] Handle uncommitted urls from split view and tab search

For these URLs we display about:blank in the omnibox so this will be
consistent. While I'm here I also shared the display URL logic so the
split NTP will show when its a local file or something.

Split NTP: https://screenshot.googleplex.com/BdMGxsXWM6BN3xp
Tab search:
https://screenshot.googleplex.com/7GCb8RuGuY7N49u

Bug: 446181124
Change-Id: I42df102c3b3d4e51819bc89a3dc9549860178c16
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7017483
Commit-Queue: Alison Gale <agale@chromium.org>
Reviewed-by: Yuheng Huang <yuhengh@chromium.org>
Reviewed-by: Chris Thompson <cthomp@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1527218}
---

diff --git a/chrome/browser/resources/tab_search/split_view/app.ts b/chrome/browser/resources/tab_search/split_view/app.ts
index e86a8c4..1f2af3ac 100644
--- a/chrome/browser/resources/tab_search/split_view/app.ts
+++ b/chrome/browser/resources/tab_search/split_view/app.ts
@@ -11,7 +11,7 @@
 import {CrLitElement} from 'chrome://resources/lit/v3_0/lit.rollup.js';
 
 import type {SelectableLazyListElement} from '../selectable_lazy_list.js';
-import {normalizeURL, TabData, TabItemType} from '../tab_data.js';
+import {getDisplayHostnameForUrl, normalizeURL, TabData, TabItemType} from '../tab_data.js';
 import type {ProfileData, Tab, TabsRemovedInfo, TabUpdateInfo} from '../tab_search.mojom-webui.js';
 import type {TabSearchApiProxy} from '../tab_search_api_proxy.js';
 import {TabSearchApiProxyImpl} from '../tab_search_api_proxy.js';
@@ -210,8 +210,9 @@
 
   private getTabData_(tab: Tab, inActiveWindow: boolean, type: TabItemType):
       TabData {
-    const tabData =
-        new TabData(tab, type, new URL(normalizeURL(tab.url.url)).hostname);
+    const displayUrl =
+        getDisplayHostnameForUrl(new URL(normalizeURL(tab.url.url)));
+    const tabData = new TabData(tab, type, displayUrl);
 
     if (type === TabItemType.OPEN_TAB) {
       tabData.inActiveWindow = inActiveWindow;
diff --git a/chrome/browser/resources/tab_search/tab_data.ts b/chrome/browser/resources/tab_search/tab_data.ts
index 56f4a5d..5eb3d2e 100644
--- a/chrome/browser/resources/tab_search/tab_data.ts
+++ b/chrome/browser/resources/tab_search/tab_data.ts
@@ -118,6 +118,18 @@
   return url || 'about:blank';
 }
 
+export function getDisplayHostnameForUrl(url: URL): string {
+  if (url.protocol === 'blob:') {
+    return loadTimeData.getString('blobUrlSource');
+  } else if (url.protocol === 'file:') {
+    return loadTimeData.getString('fileUrlSource');
+  } else if (url.protocol === 'about:' && url.pathname === 'blank') {
+    return 'about:blank';
+  } else {
+    return url.hostname;
+  }
+}
+
 export function getTitle(data: TabData|TabGroupData): string|undefined {
   if (data.type === TabItemType.RECENTLY_CLOSED_TAB_GROUP) {
     return undefined;
diff --git a/chrome/browser/resources/tab_search/tab_search_page.ts b/chrome/browser/resources/tab_search/tab_search_page.ts
index 3dbd50776..c45a68c 100644
--- a/chrome/browser/resources/tab_search/tab_search_page.ts
+++ b/chrome/browser/resources/tab_search/tab_search_page.ts
@@ -26,7 +26,7 @@
 import {search} from './search.js';
 import type {SelectableLazyListElement} from './selectable_lazy_list.js';
 import {NO_SELECTION, selectorNavigationKeys} from './selectable_lazy_list.js';
-import {ariaLabel, getHostname, getTabGroupTitle, getTitle, type ItemData, normalizeURL, TabData, TabGroupData, TabItemType, tokenEquals, tokenToString} from './tab_data.js';
+import {ariaLabel, getDisplayHostnameForUrl, getHostname, getTabGroupTitle, getTitle, type ItemData, normalizeURL, TabData, TabGroupData, TabItemType, tokenEquals, tokenToString} from './tab_data.js';
 import type {ProfileData, RecentlyClosedTab, Tab, TabGroup, TabsRemovedInfo, TabUpdateInfo} from './tab_search.mojom-webui.js';
 import {TabSearchSection} from './tab_search.mojom-webui.js';
 import type {TabSearchApiProxy} from './tab_search_api_proxy.js';
@@ -661,22 +661,12 @@
     return ariaLabel(tabData);
   }
 
-  private getDisplayHostnameForUrl_(url: URL): string {
-    if (url.protocol === 'blob:') {
-      return loadTimeData.getString('blobUrlSource');
-    } else if (url.protocol === 'file:') {
-      return loadTimeData.getString('fileUrlSource');
-    } else {
-      return url.hostname;
-    }
-  }
-
   private tabData_(
       tab: Tab|RecentlyClosedTab, inActiveWindow: boolean, type: TabItemType,
       tabGroupsMap: Map<string, TabGroup>): TabData {
     const tabData = new TabData(
         tab, type,
-        this.getDisplayHostnameForUrl_(new URL(normalizeURL(tab.url.url))));
+        getDisplayHostnameForUrl(new URL(normalizeURL(tab.url.url))));
 
     if (tab.groupId) {
       tabData.tabGroup = tabGroupsMap.get(tokenToString(tab.groupId));
diff --git a/chrome/browser/ui/webui/tab_search/tab_search_page_handler.cc b/chrome/browser/ui/webui/tab_search/tab_search_page_handler.cc
index 36955759..e4580632 100644
--- a/chrome/browser/ui/webui/tab_search/tab_search_page_handler.cc
+++ b/chrome/browser/ui/webui/tab_search/tab_search_page_handler.cc
@@ -1428,10 +1428,13 @@
   // A visible URL is used when the a new tab is still loading.
   // If it is cancelled during loading the visible URL becomes empty.
   // We will display an empty URL as about:blank in Javascript.
-  tab_data->url =
-      !last_committed_url.is_valid() || last_committed_url.is_empty()
-          ? tab_renderer_data.visible_url
-          : last_committed_url;
+  if (!last_committed_url.is_valid() || last_committed_url.is_empty()) {
+    tab_data->url = tab_renderer_data.should_display_url
+                        ? tab_renderer_data.visible_url
+                        : GURL(url::kAboutBlankURL);
+  } else {
+    tab_data->url = last_committed_url;
+  }
 
   if (tab_renderer_data.favicon.IsEmpty()) {
     tab_data->is_default_favicon = true;
diff --git a/chrome/test/data/webui/tab_search/split_new_tab_page_test.ts b/chrome/test/data/webui/tab_search/split_new_tab_page_test.ts
index 2de65aa8..2ccc569 100644
--- a/chrome/test/data/webui/tab_search/split_new_tab_page_test.ts
+++ b/chrome/test/data/webui/tab_search/split_new_tab_page_test.ts
@@ -114,6 +114,49 @@
     assertEquals(3, tabSearchItems.length);
   });
 
+  test('Formats urls properly', async () => {
+    await splitNewTabPageSetup();
+
+    const windowData = createWindowData();
+    windowData[0]!.tabs.push(
+        createTab({
+          index: 6,
+          lastActiveTimeTicks: {internalValue: BigInt(10)},
+          tabId: 8,
+          title: '',
+          url: {url: 'about:blank'},
+        }),
+        createTab({
+          index: 7,
+          lastActiveTimeTicks: {internalValue: BigInt(11)},
+          tabId: 9,
+          title: 'file.jpg',
+          url: {url: 'file://file.jpg'},
+        }),
+        createTab({
+          index: 8,
+          lastActiveTimeTicks: {internalValue: BigInt(12)},
+          tabId: 10,
+          title: 'Data',
+          url: {url: 'blob://data'},
+        }),
+    );
+    testApiProxy.getCallbackRouterRemote().tabsChanged(createProfileData({
+      windows: windowData,
+    }));
+    await eventToPromise('viewport-filled', splitNewTabPage.$.splitTabsList);
+
+    const tabSearchItems =
+        splitNewTabPage.shadowRoot.querySelectorAll('tab-search-item');
+    assertEquals(
+        loadTimeData.getString('blobUrlSource'),
+        tabSearchItems[1]!.data.hostname);
+    assertEquals(
+        loadTimeData.getString('fileUrlSource'),
+        tabSearchItems[2]!.data.hostname);
+    assertEquals('about:blank', tabSearchItems[3]!.data.hostname);
+  });
+
   test('Sorts list', async () => {
     await splitNewTabPageSetup();
     const tabSearchItems =

diff --git a/chrome/test/data/webui/tab_search/split_new_tab_page_test.ts b/chrome/test/data/webui/tab_search/split_new_tab_page_test.ts
index 2de65aa8..2ccc569 100644
--- a/chrome/test/data/webui/tab_search/split_new_tab_page_test.ts
+++ b/chrome/test/data/webui/tab_search/split_new_tab_page_test.ts
@@ -114,6 +114,49 @@
     assertEquals(3, tabSearchItems.length);
   });
 
+  test('Formats urls properly', async () => {
+    await splitNewTabPageSetup();
+
+    const windowData = createWindowData();
+    windowData[0]!.tabs.push(
+        createTab({
+          index: 6,
+          lastActiveTimeTicks: {internalValue: BigInt(10)},
+          tabId: 8,
+          title: '',
+          url: {url: 'about:blank'},
+        }),
+        createTab({
+          index: 7,
+          lastActiveTimeTicks: {internalValue: BigInt(11)},
+          tabId: 9,
+          title: 'file.jpg',
+          url: {url: 'file://file.jpg'},
+        }),
+        createTab({
+          index: 8,
+          lastActiveTimeTicks: {internalValue: BigInt(12)},
+          tabId: 10,
+          title: 'Data',
+          url: {url: 'blob://data'},
+        }),
+    );
+    testApiProxy.getCallbackRouterRemote().tabsChanged(createProfileData({
+      windows: windowData,
+    }));
+    await eventToPromise('viewport-filled', splitNewTabPage.$.splitTabsList);
+
+    const tabSearchItems =
+        splitNewTabPage.shadowRoot.querySelectorAll('tab-search-item');
+    assertEquals(
+        loadTimeData.getString('blobUrlSource'),
+        tabSearchItems[1]!.data.hostname);
+    assertEquals(
+        loadTimeData.getString('fileUrlSource'),
+        tabSearchItems[2]!.data.hostname);
+    assertEquals('about:blank', tabSearchItems[3]!.data.hostname);
+  });
+
   test('Sorts list', async () => {
     await splitNewTabPageSetup();
     const tabSearchItems =