Make component_unittests run the same tests on GYP and GN on Android

components/gcm_driver/BUILD.gn

 # Copyright 2014 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.
 
 # GYP version: components/gcm_driver.gypi:gcm_driver
 static_library("gcm_driver") {
   sources = [
     "android/component_jni_registrar.cc",
     "android/component_jni_registrar.h",
     "default_gcm_app_handler.cc",
@@ skipping 107 matching lines @@
     sources -= [
       "fake_gcm_client.cc",
       "fake_gcm_client.h",
       "fake_gcm_client_factory.cc",
       "fake_gcm_client_factory.h",
     ]
     deps -= [ "//google_apis/gcm:test_support" ]
   }
 }
 
-if (!is_android) {
-  source_set("unit_tests") {
-    testonly = true
-    sources = [
+source_set("unit_tests") {
+  testonly = true
+
+  sources = [
+    "gcm_account_tracker_unittest.cc",
+  ]
+
+  deps = [
+    ":gcm_driver",
+    ":test_support",
+    "//testing/gtest",
+    "//third_party/protobuf:protobuf_lite",
+  ]
+
+  if (!is_android) {
+    sources += [
       "gcm_account_mapper_unittest.cc",
-      "gcm_account_tracker_unittest.cc",
       "gcm_channel_status_request_unittest.cc",
       "gcm_client_impl_unittest.cc",
       "gcm_delayed_task_controller_unittest.cc",
       "gcm_driver_desktop_unittest.cc",
       "gcm_stats_recorder_impl_unittest.cc",
     ]
-
-    deps = [
-      ":gcm_driver",
-      ":test_support",
-      "//testing/gtest",
-      "//third_party/protobuf:protobuf_lite",
-    ]
   }
 }