Build mojo_shell on Android

mojo/shell/android/shell_apk/src/org/chromium/mojo_shell_apk/LibraryLoader.java

Index: mojo/shell/android/shell_apk/src/org/chromium/mojo_shell_apk/LibraryLoader.java
diff --git a/mojo/shell/android/shell_apk/src/org/chromium/mojo_shell_apk/LibraryLoader.java b/mojo/shell/android/shell_apk/src/org/chromium/mojo_shell_apk/LibraryLoader.java
new file mode 100644
index 0000000000000000000000000000000000000000..777c1c7e6efc239cc000a8165cc425c6cb6a29b1
--- /dev/null
+++ b/mojo/shell/android/shell_apk/src/org/chromium/mojo_shell_apk/LibraryLoader.java
@@ -0,0 +1,20 @@
+// Copyright 2013 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.
+
+package org.chromium.mojo_shell_apk;
+
+import java.lang.UnsatisfiedLinkError;
+import org.chromium.base.JNINamespace;
+
+@JNINamespace("mojo")
+public class LibraryLoader {
+    private static Boolean sInitialized = false;
+
+    public static void ensureInitialized() throws UnsatisfiedLinkError {
+        if (!sInitialized)
+            return;
+        sInitialized = true;
+        System.loadLibrary("mojo_shell");
+    }
+}