[Android] BackgroundTaskScheduler reschedule implementation

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

Index: chrome/android/java/src/org/chromium/chrome/browser/offlinepages/OfflineBackgroundTask.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/OfflineBackgroundTask.java b/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/OfflineBackgroundTask.java
index 938e6446ebcd58a6bb8aa8b8862497201556d162..ace4b77c2b23fde241dc087dec5e56094613fee3 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/OfflineBackgroundTask.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/OfflineBackgroundTask.java
@@ -46,6 +46,11 @@ public class OfflineBackgroundTask implements BackgroundTask {
         return mBackgroundProcessor.stopScheduledProcessing();
     }
 
+    @Override
+    public void reschedule(Context context) {
+        BackgroundScheduler.getInstance(context).rescheduleOfflinePagesTasksOnUpgrade();
+    }
+
     /** Wraps the callback for code reuse */
     private Callback<Boolean> wrapCallback(final TaskFinishedCallback callback) {
         return new Callback<Boolean>() {