Move //webapk to //chrome/android/webapk

chrome/android/webapk/libs/client/src/org/chromium/webapk/lib/client/WebApkVersionManager.java

 // 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.webapk.lib.client;
 
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.preference.PreferenceManager;
 
@@ skipping 50 matching lines @@
                 WebApkUtils.getRuntimeDexName(WebApkVersion.CURRENT_RUNTIME_DEX_VERSION);
         File dexFile = new File(dexDir, dexName);
         if (!FileUtils.extractAsset(context, dexName, dexFile) || !DexOptimizer.optimize(dexFile)) {
             return;
         }
 
         // Make dex file world-readable so that WebAPK can use it.
         dexFile.setReadable(true, false);
     }
 }