Enable telemetry_perf_unittests on swarming.

tools/perf/BUILD.gn

 # Copyright 2015 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.
 
-if (!is_android) {
-  group("perf") {
-    testonly = true
-    deps = [
-      "//tools/perf/chrome_telemetry_build:telemetry_chrome_test",
-    ]
+group("perf") {
+  testonly = true
+  deps = [
+    "//tools/perf/chrome_telemetry_build:telemetry_chrome_test",
+  ]
 
-    data = [
-      "//tools/perf/",
+  data = [
+    "//tools/perf/",
 
-      # Field trial config
-      "//tools/variations/",
-      "//testing/variations/",
-    ]
-  }
+    # Field trial config
+    "//tools/variations/",
+    "//testing/variations/",
+  ]
 }
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 
   wrapper_script("run_benchmark_wrapper") {
     target = "run_benchmark"
     flag_name = "--chromium-output-directory"
   }
 }