Move //mojo/shell to //shell

shell/android/apk/src/org/chromium/mojo_shell_apk/MojoShellApplication.java

 // 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 android.util.Log;
 
 import org.chromium.base.BaseChromiumApplication;
 import org.chromium.base.PathUtils;
@@ skipping 37 matching lines @@
     private void initializeNative() {
         try {
             LibraryLoader.ensureInitialized();
         } catch (ProcessInitException e) {
             Log.e(TAG, "libmojo_shell initialization failed.", e);
             System.exit(-1);
             return;
         }
     }
 }