Move assist_ranker unit tests to brave_components_unittests (#34128)

components/BUILD.gn

@@ -24,6 +24,7 @@ test("brave_components_unittests") {
     "//base",
     "//brave/components/ai_chat/core/common/buildflags",
     "//brave/components/api_request_helper:unit_tests",
+    "//brave/components/assist_ranker:unit_tests",
     "//brave/components/brave_account:unit_tests",
     "//brave/components/brave_account/endpoint_client:unit_tests",
     "//brave/components/brave_account/endpoints:unit_tests",

components/assist_ranker/BUILD.gn

@@ -0,0 +1,20 @@
+# Copyright (c) 2026 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/.
+
+source_set("unit_tests") {
+  testonly = true
+
+  sources = [ "ranker_model_loader_impl_unittest.cc" ]
+
+  deps = [
+    "//base",
+    "//base/test:test_support",
+    "//components/assist_ranker",
+    "//components/assist_ranker/proto",
+    "//services/network:test_support",
+    "//services/network/public/cpp",
+    "//testing/gtest",
+  ]
+}

test/BUILD.gn

@@ -120,7 +120,6 @@ test("brave_unit_tests") {
     "//brave/chromium_src/net/cookies/brave_canonical_cookie_unittest.cc",
     "//brave/common/brave_content_client_unittest.cc",
     "//brave/common/profiler/thread_profile_configuration_unittest.cc",
-    "//brave/components/assist_ranker/ranker_model_loader_impl_unittest.cc",
     "//brave/components/brave_perf_predictor/browser/bandwidth_linreg_unittest.cc",
     "//brave/components/brave_perf_predictor/browser/bandwidth_savings_predictor_unittest.cc",
     "//brave/components/brave_perf_predictor/browser/named_third_party_registry_unittest.cc",
@@ -283,8 +282,6 @@ test("brave_unit_tests") {
     "//chrome/browser/sync",
     "//chrome/browser/ui",
     "//chrome/test:test_support",
-    "//components/assist_ranker",
-    "//components/assist_ranker/proto",
     "//components/bookmarks/browser",
     "//components/bookmarks/common",
     "//components/content_settings/core/test:test_support",