Change webapk packages and directory structure

webapk/shell_apk/AndroidManifest.xml

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright 2015 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.
 -->
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="{{ manifest_package }}"
     android:versionCode="1"
     android:versionName="1.0" >
 
     <uses-sdk
         android:minSdkVersion="16"
         android:targetSdkVersion="23" />
 
     <uses-permission-sdk-23 android:name="android.permission.ACCESS_FINE_LOCATION"/>
     <uses-permission-sdk-23 android:name="android.permission.CAMERA"/>
     <uses-permission-sdk-23 android:name="android.permission.RECORD_AUDIO"/>
 
     <application
-        android:name="org.chromium.minting.WebApkApplication"
+        android:name="org.chromium.webapk.shell_apk.WebApkApplication"
         android:icon="@drawable/app_icon"
         android:label="mintingapp"
         android:allowBackup="false" >
-        <activity android:name="org.chromium.minting.MainActivity"
+        <activity android:name="org.chromium.webapk.shell_apk.MainActivity"
                   android:theme="@android:style/Theme.Translucent.NoTitleBar">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
             <intent-filter>
                 <action android:name="android.intent.action.VIEW"></action>
                 <category android:name="android.intent.category.DEFAULT"></category>
                 <category android:name="android.intent.category.BROWSABLE"></category>
                 <data android:scheme="https" android:host="{{ scope_url_host }}" android:pathPrefix=""></data>
             </intent-filter>
         </activity>
         <meta-data android:name="runtimeHost" android:value="{{ runtime_host }}" />
         <meta-data android:name="hostUrl" android:value="{{ host_url }}" />
         <meta-data android:name="mac" android:value="{{ mac }}" />
         <meta-data android:name="scope" android:value="{{ scope }}" />
         <service
-            android:name="org.chromium.minting.WebApkServiceFactory"
+            android:name="org.chromium.webapk.shell_apk.WebApkServiceFactory"
             android:exported="true">
             <intent-filter>
               <action android:name="android.intent.action.MAIN" />
               <category android:name="android.intent.category.MINTED_API" />
             </intent-filter>
         </service>
         <meta-data android:name="org.chromium.content.browser.NUM_SANDBOXED_SERVICES"
             android:value="3"/>
         <service android:name="org.chromium.content.app.SandboxedProcessService0"
             android:isolatedProcess="true"
@@ skipping 15 matching lines @@
             android:exported="true"/>
         <service android:name="org.chromium.content.app.PrivilegedProcessService1"
             android:process=":privileged_process1"
             android:exported="true"/>
         <service android:name="org.chromium.content.app.PrivilegedProcessService2"
             android:process=":privileged_process2"
             android:exported="true"/>
     </application>
 
 </manifest>