Add NativeLibraryPreloader interface

base/android/java/src/org/chromium/base/library_loader/NativeLibraryPreloader.java

Index: base/android/java/src/org/chromium/base/library_loader/NativeLibraryPreloader.java
diff --git a/base/android/java/src/org/chromium/base/library_loader/NativeLibraryPreloader.java b/base/android/java/src/org/chromium/base/library_loader/NativeLibraryPreloader.java
new file mode 100644
index 0000000000000000000000000000000000000000..a3c4dd66d239c2cadfb4ead332b6d387ce91d55b
--- /dev/null
+++ b/base/android/java/src/org/chromium/base/library_loader/NativeLibraryPreloader.java
@@ -0,0 +1,14 @@
+// Copyright 2016 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.library_loader;
+
+import android.content.Context;
+
+/**
+ * This is interface to preload the native library before calling System.loadLibrary.
+ */
+public abstract class NativeLibraryPreloader {
+    public abstract void loadLibrary(Context context);
+}