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 299 matching lines @@
     ]
   }
 
   if (is_android) {
     deps += [
       "//base:base_junit_tests",
       "//base/android/linker:chromium_android_linker",
       "//build/android/gyp/test:hello_world",
       "//build/android/rezip",
       "//chrome/android/webapk/shell_apk:webapk",
+      "//chrome/test:telemetry_perf_unittests",

[Nico, 2016/06/01 15:12:38]

why is this in an is_android block?

[ghost stip (do not use), 2016/06/01 17:15:42]

seemed like a good idea at the time? should this go in "both_gn_and_gyp" or
"gn_only"? telemetry_perf_unittests is a gyp target, but it's not in
build/gn_migration.gypi

       "//components/invalidation/impl:components_invalidation_impl_junit_tests",
       "//components/policy/android:components_policy_junit_tests",
       "//content/public/android:content_junit_tests",
       "//content/shell/android:content_shell_apk",
       "//media/gpu:video_decode_accelerator_unittest",
       "//net/android:net_junit_tests",
       "//testing/android/junit:junit_unit_tests",
       "//third_party/errorprone:chromium_errorprone",
       "//third_party/smhasher:murmurhash3",
       "//tools/android:android_tools",
@@ skipping 631 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" ]
 }