[Android] Add an out-of-app instrumentation driver APK.

testing/android/driver/BUILD.gn

Index: testing/android/driver/BUILD.gn
diff --git a/testing/android/driver/BUILD.gn b/testing/android/driver/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..436ac63c245b5fabc4b6079e13a52d7446aec110
--- /dev/null
+++ b/testing/android/driver/BUILD.gn
@@ -0,0 +1,21 @@
+# 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.
+
+import("//build/config/android/rules.gni")
+
+# GYP: //testing/android/on_device_instrumentation.gyp:driver_apk
+android_apk("driver_apk") {
+  android_manifest = "java/AndroidManifest.xml"
+  apk_name = "OnDeviceInstrumentationDriver"
+  testonly = true
+
+  deps = [
+    "//testing/android/appurify_support:appurify_support_java",
+    "//testing/android/broker:broker_java",
+    "//testing/android/reporter:reporter_java",
+  ]
+
+  java_files =
+      [ "java/src/org/chromium/test/driver/OnDeviceInstrumentationDriver.java" ]
+}