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

chrome/android/webapk/shell_apk/javatests/dex_optimizer/src/org/chromium/webapk/shell_apk/test/dex_optimizer/DexOptimizerServiceImpl.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.shell_apk.test.dex_optimizer;
 
 import android.app.Service;
 import android.content.Context;
 import android.content.Intent;
 import android.os.IBinder;
@@ skipping 44 matching lines @@
                 }
 
                 if (!DexOptimizer.optimize(dexFile)) {
                     return null;
                 }
                 return dexFile.getPath();
             }
         };
     }
 }