Allow native_viewport to create new native windows on demand on Android.

shell/android/task_launcher/BUILD.gn

Index: shell/android/task_launcher/BUILD.gn
diff --git a/shell/android/task_launcher/BUILD.gn b/shell/android/task_launcher/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..74380bed2925c3166cf65a16834bc5e7356403c1
--- /dev/null
+++ b/shell/android/task_launcher/BUILD.gn
@@ -0,0 +1,35 @@
+# 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("//mojo/public/tools/bindings/mojom.gni")
+
+if (is_android) {
+  import("//mojo/android/rules.gni")
+
+  mojo_android_application("task_launcher") {

[qsr, 2015/08/07 11:18:01]

Couldn't this be a pure java application?

Also, maybe it should be bundled in the shell, especially because the native
viewport service is.

[etiennej, 2015/08/07 12:22:11]

I discovered JavaApplicationRegistery, so done.

+    sources = [
+      "task_launcher.cc",
+    ]
+
+    deps = [
+      "//base",
+      "//mojo/public/c/system",
+      "//mojo/public/cpp/application:standalone",
+      "//mojo/common",
+      "//mojo/public/cpp/system",
+      "//mojo/public/cpp/utility",
+      "//mojo/public/platform/native:system",
+      "//services/native_viewport:interfaces",
+    ]
+
+    java_sources = [ "src/org/chromium/mojo/task_launcher/TaskLauncher.java" ]
+
+    java_deps = [
+      "//base:base_java",
+      "//shell:java",
+    ]
+
+    jni_package = "shell"
+  }
+}