Enable telemetry_perf_unittests on swarming.

BUILD.gn

 # Copyright (c) 2013 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.
 
 # This is the root build file for GN. GN will start processing by loading this
 # file, and recursively load all dependencies until all dependencies are either
 # resolved or known not to exist (which will cause the build to fail). So if
 # you add a new build file, there must be some path of dependencies from this
 # file to your new one or GN won't know about it.
 
@@ skipping 182 matching lines @@
       "//tools/perf/clear_system_cache",
       "//ui/accessibility:accessibility_unittests",
     ]
   }
 
   if (!is_ios) {
     # TODO(GYP): Figure out which of these should actually build on iOS,
     # and whether there should be other targets that are iOS-only and missing.
     deps += [
       "//cc:cc_unittests",
+      "//chrome/test:telemetry_perf_unittests",
       "//chrome/test:unit_tests",
       "//components:components_browsertests",
       "//content/shell:content_shell",
       "//content/test:content_browsertests",
       "//content/test:content_perftests",
       "//content/test:content_unittests",
       "//device:device_unittests",
       "//gpu:gpu_unittests",
       "//gpu/ipc/service:gpu_ipc_service_unittests",
       "//ipc:ipc_tests",
@@ skipping 748 matching lines @@
   assert(target_name != "")  # Mark as used.
   sources = invoker.actual_sources
   assert(
       sources == invoker.actual_sources,
       "Do not use a platform name in your output directory (found \"$root_build_dir\"). http://crbug.com/548283")
 }
 
 assert_valid_out_dir("_unused") {
   actual_sources = [ "$root_build_dir/foo" ]
 }