Add native libraries to gn apks

base/android/java/templates/native_libraries_array.h

-// 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.
-
-// This is a placeholder for compiling base_java.  The base java library
-// is compiled with no array defined, and then the build system creates a
-// version of the file with the real list of libraries required (which changes
-// based upon which .apk is being built).
-
-// The result of including this template in the NativeLibraries.template has to
-// compile. Since LIBRARIES is final in NativeLibraries.template we have to
-// initalize it with something to allow the resulting Java file to compile.
-// By including this file we will get:
-//
-// public static final String[] LIBRARIES
-// ={}
-// ;
-//
-// Which does compile.
-={}