Route through a JobService when receiving a message for the GCM Driver

components/gcm_driver/android/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.
 
 import("//build/config/android/rules.gni")
 
 generate_jni("jni_headers") {
   sources = [
     "java/src/org/chromium/components/gcm_driver/GCMDriver.java",
   ]
   jni_package = "components/gcm_driver"
 }
 
 android_library("gcm_driver_java") {
   deps = [
     "//base:base_java",
     "//content/public/android:content_java",
     "//third_party/android_tools:android_gcm_java",
     "//third_party/jsr-305:jsr_305_javalib",
   ]
 
   java_files = [
     "java/src/org/chromium/components/gcm_driver/GCMDriver.java",
+    "java/src/org/chromium/components/gcm_driver/GCMMessage.java",
     "java/src/org/chromium/components/gcm_driver/GoogleCloudMessagingSubscriber.java",
     "java/src/org/chromium/components/gcm_driver/GoogleCloudMessagingV2.java",
   ]
 }
+
+junit_binary("components_gcm_driver_junit_tests") {
+  java_files =
+      [ "junit/src/org/chromium/components/gcm_driver/GCMMessageTest.java" ]
+  deps = [
+    ":gcm_driver_java",
+    "//base:base_java",
+    "//base:base_java_test_support",
+    "//third_party/hamcrest:hamcrest_java",
+  ]
+}