[Android] BackgroundTaskScheduler reschedule implementation

components/background_task_scheduler/android/java/src/org/chromium/components/background_task_scheduler/BackgroundTask.java

Index: components/background_task_scheduler/android/java/src/org/chromium/components/background_task_scheduler/BackgroundTask.java
diff --git a/components/background_task_scheduler/android/java/src/org/chromium/components/background_task_scheduler/BackgroundTask.java b/components/background_task_scheduler/android/java/src/org/chromium/components/background_task_scheduler/BackgroundTask.java
index c2fe1a71e9fceb3a818b5ccc520615aad1dd1c3d..b27f2baa1c3b2b191cd45ed781cd69b207028525 100644
--- a/components/background_task_scheduler/android/java/src/org/chromium/components/background_task_scheduler/BackgroundTask.java
+++ b/components/background_task_scheduler/android/java/src/org/chromium/components/background_task_scheduler/BackgroundTask.java
@@ -69,4 +69,14 @@ public interface BackgroundTask {
      */
     @MainThread
     boolean onStopTask(Context context, TaskParameters taskParameters);
+
+    /**
+     * Callback from {@link BackgroundTaskScheduler} when it detects system conditions requiring
+     * rescheduling, e.g. Google Play Services update or OS upgrade. The task should schedule itself
+     * again with appropriate parameters.
+     *
+     * @param context the current context.
+     */
+    @MainThread
+    void reschedule(Context context);
 }