Precache uses GcmNetworkManager for task scheduling

chrome/android/java/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. -->
 
 <!--
 Note: This is a jinja2 template, processed at build time into the final manifest.
 
 Blocks denoted with { % block some_name % }foo{ % endblock % } can be overridden
 by a child template that "extends" this file.
@@ skipping 456 matching lines @@
         <service android:name="org.chromium.chrome.browser.download.DownloadNotificationService"
             android:exported="false">
         </service>
 
         <!-- Precache service.
         Not enabled on Stable or Work channels. This is currently an experiment
         on beta channel (crbug/309216) but the mere existence of these can lead
         to some process churn, so omit them while not relevant. b/24776372
         -->
         {% if channel in ['default', 'canary', 'dev', 'beta'] %}
-        <service android:name="org.chromium.chrome.browser.precache.PrecacheService"
-            android:exported="false" />
-        <receiver android:name="org.chromium.chrome.browser.precache.PrecacheServiceLauncher">
+        <receiver android:name="org.chromium.chrome.browser.precache.PrecacheBootReceiver">
             <intent-filter>
-                <action android:name="android.intent.action.ACTION_POWER_CONNECTED"/>
-                <action android:name="android.intent.action.ACTION_POWER_DISCONNECTED"/>
-                <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
+                <action android:name="android.intent.action.BOOT_COMPLETED"/>
             </intent-filter>
         </receiver>
         {% endif %}
 
         <service android:name="org.chromium.components.variations.firstrun.VariationsSeedService"
             android:exported="false" />
 
         <receiver android:name="org.chromium.components.variations.firstrun.VariationsSeedServiceLauncher"
             android:permission="{{ manifest_package }}.TOS_ACKED">
             <intent-filter>
@@ skipping 269 matching lines @@
              choose the first MediaRouteController that can play it, so the order of the list can be important.
              The most specific MediaRouteControllers should be listed first, followed by more generic ones.
              The downstream manifest replaces this block, and hence replaces the list of media route
              controllers with its own list. -->
         <meta-data android:name="org.chromium.content.browser.REMOTE_MEDIA_PLAYERS"
             android:value="org.chromium.chrome.browser.media.remote.DefaultMediaRouteController"/>
 
         {% endblock %}
     </application>
 </manifest>