Add first java source code and gyp/ant changes to build java code.

base/android/java/org/chromium/base/DeleteStaging.java

Index: base/android/java/org/chromium/base/DeleteStaging.java
diff --git a/base/android/java/org/chromium/base/DeleteStaging.java b/base/android/java/org/chromium/base/DeleteStaging.java
new file mode 100644
index 0000000000000000000000000000000000000000..5f0718c95106e0019d7118d7e09856f3d34e9d60
--- /dev/null
+++ b/base/android/java/org/chromium/base/DeleteStaging.java
@@ -0,0 +1,16 @@
+// Copyright (c) 2012 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.base;
+
+// This class serves as arbitrary Java code that can be compiled as part of
+// base_java, which builds base Java code that will be upstreamed. Please
+// delete this file and replace with actual base Java source files (e.g.
+// CallByNative.java and PathUtils.java).
+
+public class DeleteStaging {
+  public static void main(String[] args) {
+    return;
+  }
+}