[AI Chat] [Content Agent] NTP strings setup (#32265)

* [AI Chat] [Content Agent] NTP strings setup

browser/resources/ai_chat_agent_new_tab_page/ai_chat_agent_new_tab_page.tsx

@@ -3,4 +3,7 @@
 // License, v. 2.0. If a copy of the MPL was not distributed with this file,
 // You can obtain one at https://mozilla.org/MPL/2.0/.
 
-console.log('ai_chat_agent_new_tab_page')
+import './strings'
+import { getLocale } from '$web-common/locale'
+
+console.log('ai_chat_agent_new_tab_page', getLocale(S.AI_AGENT_NTP_TITLE))

browser/resources/ai_chat_agent_new_tab_page/strings.ts

@@ -0,0 +1,15 @@
+// Copyright (c) 2025 The Brave Authors. All rights reserved.
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at https://mozilla.org/MPL/2.0/.
+
+import '$web-common/strings'
+
+import { AiChatAgentNtpStrings } from 'gen/components/grit/brave_components_webui_strings'
+
+declare global {
+  // Expose the AiChatStrings enum on the global `S` enum.
+  interface Strings {
+    AiChatAgentNtpStrings: typeof AiChatAgentNtpStrings
+  }
+}

browser/resources/ai_chat_agent_new_tab_page/tsconfig.json

@@ -0,0 +1,4 @@
+{
+  "extends": "../../../tsconfig",
+  "include": ["**/*.ts", "**/*.tsx", "**/*.d.ts", "../../../definitions/*.d.ts"]
+}

browser/ui/webui/ai_chat/ai_chat_agent_new_tab_page_ui.cc

@@ -10,6 +10,7 @@
 #include "brave/browser/ui/webui/brave_webui_source.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/webui_url_constants.h"
+#include "components/grit/brave_components_webui_strings.h"
 #include "content/public/browser/web_ui.h"
 #include "content/public/browser/web_ui_data_source.h"
 #include "ui/webui/webui_util.h"
@@ -24,6 +25,8 @@ AIChatAgentNewTabPageUI::AIChatAgentNewTabPageUI(content::WebUI* web_ui)
       source, kAiChatAgentNewTabPageGenerated,
       IDR_AI_CHAT_AGENT_NEW_TAB_PAGE_STATIC_AI_CHAT_AGENT_NEW_TAB_PAGE_HTML);
 
+  source->AddLocalizedStrings(webui::kAiChatAgentNtpStrings);
+
   AddBackgroundColorToSource(source, web_ui->GetWebContents());
 }
 

components/ai_chat/resources/common/strings.ts

@@ -8,7 +8,7 @@ import '$web-common/strings'
 import { AiChatStrings } from 'gen/components/grit/brave_components_webui_strings'
 
 declare global {
-  // Expose the AiChatStrings enum on the global `S` enum.
+  // Expose the feature's enum set on the global `S` enum
   interface Strings {
     AiChatStrings: typeof AiChatStrings
   }

components/resources/BUILD.gn

@@ -165,6 +165,7 @@ brave_grit("strings") {
 
   defines = [
     "enable_ai_chat=$enable_ai_chat",
+    "enable_brave_ai_chat_agent_profile=$enable_brave_ai_chat_agent_profile",
     "enable_speedreader=$enable_speedreader",
     "enable_tor=$enable_tor",
     "enable_brave_vpn=$enable_brave_vpn",

components/resources/ai_chat_agent_ntp_strings.grdp

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<grit-part>
+  <message name="IDS_AI_AGENT_NTP_TITLE" desc="Title for the Brave AI Agent mode New Tab Page" formatter_data="webui=AiChatAgentNtp">
+    Agent mode
+  </message>
+</grit-part>

components/resources/brave_components_strings.grd

@@ -830,6 +830,9 @@
       <part file="speedreader_strings.grdp" />
       <part file="ai_chat_prompts.grdp" />
       <part file="ai_chat_ui_strings.grdp" />
+      <if expr="enable_brave_ai_chat_agent_profile">
+        <part file="ai_chat_agent_ntp_strings.grdp" />
+      </if>
       <part file="email_aliases_strings.grdp" />
       <if expr="not is_android">
         <part file="brave_new_tab_page_strings.grdp" />