[Offline pages] Ensuring tasks scheduled through GCM NM are persisted

chrome/android/java/src/org/chromium/chrome/browser/offlinepages/BackgroundGcmScheduler.java

Index: chrome/android/java/src/org/chromium/chrome/browser/offlinepages/BackgroundGcmScheduler.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/BackgroundGcmScheduler.java b/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/BackgroundGcmScheduler.java
index ae8126e3323ed72e9fd7cf3a75005c5db376de04..c01c3fa95cba603a29e2b7b95bc80d8fa5304444 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/BackgroundGcmScheduler.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/BackgroundGcmScheduler.java
@@ -50,6 +50,7 @@ public class BackgroundGcmScheduler extends BackgroundScheduler {
                                             ? Task.NETWORK_STATE_UNMETERED
                                             : Task.NETWORK_STATE_CONNECTED)
                             .setRequiresCharging(triggerConditions.requirePowerConnected())
+                            .setPersisted(true)
                             .setExtras(taskExtras)
                             .build();