[Telemetry SWX] move browser test target to test/BUILD.gn

Move browser test related target to test/BUILD.gn file.

Bug: b:158566609
Change-Id: I9ba8a796fd77b3286fca4a04bc88ae30b8022821
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2244212
Commit-Queue: Oleh Lamzin <lamzin@google.com>
Reviewed-by: Giovanni Ortuño Urquidi <ortuno@chromium.org>
Reviewed-by: Mahmoud Gawad <mgawad@google.com>
Cr-Commit-Position: refs/heads/master@{#781256}

chrome/test/BUILD.gn

@@ -1530,7 +1530,7 @@ if (!is_android) {
         if (!is_official_build) {
           deps += [
             "//chromeos/components/sample_system_web_app_ui:browser_tests_js",
-            "//chromeos/components/telemetry_extension_ui:browser_tests_js",
+            "//chromeos/components/telemetry_extension_ui/test:browser_tests_js",
           ]
         }
       }

chromeos/components/telemetry_extension_ui/BUILD.gn

@@ -2,8 +2,6 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-import("//chrome/test/base/js2gtest.gni")
-
 assert(is_chromeos, "Telemetry Extension is Chrome OS only")
 assert(!is_official_build,
        "Telemetry Extension is only built for unofficial builds")
@@ -29,11 +27,3 @@ static_library("telemetry_extension_ui") {
     "//ui/webui",
   ]
 }
-
-js2gtest("browser_tests_js") {
-  test_type = "mojo_lite_webui"
-
-  sources = [ "test/telemetry_extension_ui_browsertest.js" ]
-
-  defines = [ "HAS_OUT_OF_PROC_TEST_RUNNER" ]
-}

chromeos/components/telemetry_extension_ui/test/BUILD.gn

+# Copyright 2020 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.
+
+import("//chrome/test/base/js2gtest.gni")
+
+assert(is_chromeos, "Telemetry Extension is Chrome OS only")
+assert(!is_official_build,
+       "Telemetry Extension is only built for unofficial builds")
+
+js2gtest("browser_tests_js") {
+  test_type = "mojo_lite_webui"
+
+  sources = [ "telemetry_extension_ui_browsertest.js" ]
+
+  defines = [ "HAS_OUT_OF_PROC_TEST_RUNNER" ]
+}