Add AwVariationsSeedFetchService and refactory VariationsSeedFetcher

android_webview/apk/java/AndroidManifest.xml

 <?xml version="1.0" encoding="utf-8"?>
 <!--
   Copyright (c) 2012 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"
     xmlns:tools="http://schemas.android.com/tools"
     package="{{package|default('com.android.webview')}}">
@@ skipping 20 matching lines @@
                 <intent-filter>
                     <action android:name="android.settings.WEBVIEW_LICENSE" />
                     <category android:name="android.intent.category.DEFAULT" />
                 </intent-filter>
                 <meta-data android:name="com.android.settings.PRIMARY_PROFILE_CONTROLLED"
                            android:value="true" />
             </activity>
             <provider android:name="com.android.webview.chromium.LicenseContentProvider"
                       android:exported="true"
                       android:authorities="{{ manifest_package }}.LicenseContentProvider" />
+                <service android:name="org.chromium.android_webview.AwVariationsSeedFetchService"

[paulmiller, 2017/07/10 18:23:12]

unindent

[paulmiller, 2017/07/10 23:37:40]

Never mind; per the "WebView Service design" email thread, it sounds like this
Service should actually go inside the "donor_package" condition, below.

[yiyuny, 2017/07/11 19:15:18]

Acknowledged.

[yiyuny, 2017/07/11 19:15:18]

Done.

+                         android:permission="android.permission.BIND_JOB_SERVICE"
+                         android:exported="true"
+                         android:process=":variations_service"/>
             {% if donor_package is not defined %}
                 <service android:name="org.chromium.android_webview.crash.CrashReceiverService"
                          android:exported="true"
                          android:process=":crash_receiver_service"/>
                 <service android:name="org.chromium.android_webview.crash.AwMinidumpUploadJobService"
                          android:permission="android.permission.BIND_JOB_SERVICE"
                          android:exported="true"
                          android:process=":crash_receiver_service"/>
             {% endif %}
         {% endmacro %}
@@ skipping 13 matching lines @@
                      android:isolatedProcess="true"
                      android:exported="true"
                      android:externalService="true"
                      tools:ignore="ExportedService"
                      {{sandboxed_service_extra_flags|default('')}} />
         {% endfor %}
         <meta-data android:name="org.chromium.content.browser.NUM_PRIVILEGED_SERVICES"
                    android:value="0"/>
     </application>
 </manifest>