Persist Instance ID data to GCM store.

components/gcm_driver/instance_id/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:instance_id_driver
 source_set("instance_id") {
   sources = [
     "instance_id.cc",
     "instance_id.h",
     "instance_id_driver.cc",
@@ skipping 16 matching lines @@
     sources += [
       "instance_id_android.cc",
       "instance_id_android.h",
     ]
   }
 }
 
 source_set("test_support") {
   testonly = true
   sources = [
-    "fake_instance_id_driver.cc",
-    "fake_instance_id_driver.h",
+    "fake_gcm_driver_for_instance_id.cc",
+    "fake_gcm_driver_for_instance_id.h",
   ]
 
   deps = [
     ":instance_id",
+    "//components/gcm_driver:test_support",
     "//testing/gtest",
   ]
 }