Precache uses GcmNetworkManager for task scheduling

chrome/android/java/src/org/chromium/chrome/browser/precache/FailureReason.java

 // 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.
 
 package org.chromium.chrome.browser.precache;
 
 import java.util.EnumSet;
 
 /** A reason why prefetching failed to start. */
 enum FailureReason {
@@ skipping 10 matching lines @@
     NATIVE_SHOULD_RUN_IS_FALSE(3),
 
     /** DeviceState#isPowerConnected() returns false. */
     NO_POWER(4),
 
     /** DeviceState#isWifiAvailable() returns false. */
     NO_WIFI(5),
 
     // Deprecated: SCREEN_ON(6).
 
-    /** PrecacheServiceLauncher#timeSinceLastPrecacheMs() is too recent. */
-    NOT_ENOUGH_TIME_SINCE_LAST_PRECACHE(7),
+    // Deprecated: NOT_ENOUGH_TIME_SINCE_LAST_PRECACHE(7),
 
-    /** PrecacheService#isPrecaching() returns true. */
+    /** PrecacheController#isPrecaching() returns true. */
     CURRENTLY_PRECACHING(8);
 
     /** Returns the set of reasons as a bit vector. */
     static int bitValue(EnumSet<FailureReason> reasons) {
         int value = 0;
         for (FailureReason reason : reasons) value |= 1 << reason.mPosition;
         return value;
     }
 
     FailureReason(int position) {
         this.mPosition = position;
     }
 
     /** The bit position, to be set when computing the bit vector. */
     private final int mPosition;
 }