cache_invalidation: Restrict background services only on O.

chrome/android/java/src/org/chromium/chrome/browser/invalidation/InvalidationController.java

 // Copyright 2013 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.invalidation;
 
 import android.content.Context;
 import android.content.Intent;
 import android.os.AsyncTask;
 import android.os.Handler;
@@ skipping 342 matching lines @@
         mUseGcmUpstream = canUseGcmUpstream;
         mCanDisableSessionInvalidations = canDisableSessionInvalidations;
         mSessionInvalidationsEnabled = !mCanDisableSessionInvalidations;
         mEnableSessionInvalidationsTimer = new Timer();
 
         ApplicationStatus.registerApplicationStateListener(this);
     }
 
     private boolean shouldRestrictBackgroundServices() {
         // Restricts the use of background services when not in foreground. See crbug.com/680812.
-        return BuildInfo.isGreaterThanN() && !ApplicationStatus.hasVisibleActivities();
+        return BuildInfo.isAtLeastO() && !ApplicationStatus.hasVisibleActivities();
     }
 
     @Override
     public void onApplicationStateChange(int newState) {
         // The isSyncEnabled() check is used to check whether the InvalidationController would be
         // started if it did not stop itself when the application is paused.
         if (AndroidSyncSettings.isSyncEnabled(mContext)) {
             if (newState == ApplicationState.HAS_RUNNING_ACTIVITIES) {
                 start();
             } else if (newState == ApplicationState.HAS_PAUSED_ACTIVITIES) {
                 stop();
             }
         }
     }
 }