[Android] Correctly calculate time to next snippets rescheduling.

chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsLauncher.java

Index: chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsLauncher.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsLauncher.java b/chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsLauncher.java
index 0f33f69bc7c7b7a1e1eb5dbeb5c364a5681469f4..d72f74bb65e56a6b9e838ca0d2d0d32044147456 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsLauncher.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ntp/snippets/SnippetsLauncher.java
@@ -114,7 +114,7 @@ public class SnippetsLauncher {
     private static OneoffTask buildRescheduleTask(Date date) {
         Date now = new Date();
         // Convert from milliseconds to seconds, rounding up.
-        long delaySeconds = (now.getTime() - date.getTime() + 999) / 1000;
+        long delaySeconds = (date.getTime() - now.getTime() + 999) / 1000;
         final long intervalSeconds = 15 * 60;
         return new OneoffTask.Builder()
                 .setService(ChromeBackgroundService.class)