[Android] Fix gn build for instrumentation tests.

build/android/pylib/device/commands/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")
+
+group("commands") {
+  datadeps = [
+    ":chromium_commands",
+    ":copy_chromium_commands",
+  ]
+}
+
+# GYP: //build/android/pylib/device/commands/commands.gyp:chromium_commands
+android_library("chromium_commands") {
+  java_files = [
+    "java/src/org/chromium/android/commands/unzip/Unzip.java",
+  ]
+}
+
+copy("copy_chromium_commands") {
+  sources = ["$target_gen_dir/chromium_commands.dex.jar"]

[cjhopman, 2014/10/29 17:21:24]

nit: spaces around the entry in a single line list

[ "foo" ]

[qsr, 2014/10/30 12:15:53]

Done.

+  outputs = ["$root_build_dir/chromium_commands.dex.jar"]
+}