Update to newer Android Lint and suppress new Lint errors

chrome/android/java/src/org/chromium/chrome/browser/DeferredStartupHandler.java

 // Copyright 2015 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;
 
+import android.annotation.SuppressLint;
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.os.AsyncTask;
 import android.os.Looper;
 import android.os.MessageQueue;
 import android.os.SystemClock;
 import android.support.annotation.UiThread;
 import android.support.annotation.WorkerThread;
 import android.view.inputmethod.InputMethodInfo;
 import android.view.inputmethod.InputMethodManager;
@@ skipping 45 matching lines @@
  * Handler for application level tasks to be completed on deferred startup.
  */
 public class DeferredStartupHandler {
     private static final String TAG = "DeferredStartup";
     /** Prevents race conditions when deleting snapshot database. */
     private static final Object SNAPSHOT_DATABASE_LOCK = new Object();
     private static final String SNAPSHOT_DATABASE_REMOVED = "snapshot_database_removed";
     private static final String SNAPSHOT_DATABASE_NAME = "snapshots.db";
 
     private static class Holder {
+        @SuppressLint("StaticFieldLeak")
         private static final DeferredStartupHandler INSTANCE = new DeferredStartupHandler();
     }
 
     private boolean mDeferredStartupInitializedForApp;
     private boolean mDeferredStartupCompletedForApp;
     private long mDeferredStartupDuration;
     private long mMaxTaskDuration;
     private final Context mAppContext;
 
     private final Queue<Runnable> mDeferredTasks;
 
     /**
      * This class is an application specific object that handles the deferred startup.
      * @return The singleton instance of {@link DeferredStartupHandler}.
      */
     public static DeferredStartupHandler getInstance() {
         return sDeferredStartupHandler == null ? Holder.INSTANCE : sDeferredStartupHandler;
     }
 
     @VisibleForTesting
     public static void setInstanceForTests(DeferredStartupHandler handler) {
         sDeferredStartupHandler = handler;
     }
 
+    @SuppressLint("StaticFieldLeak")
     private static DeferredStartupHandler sDeferredStartupHandler;
 
     protected DeferredStartupHandler() {
         mAppContext = ContextUtils.getApplicationContext();
         mDeferredTasks = new LinkedList<>();
     }
 
     /**
      * Add the idle handler which will run deferred startup tasks in sequence when idle. This can
      * be called multiple times by different activities to schedule their own deferred startup
@@ skipping 368 matching lines @@
     }
 
     /**
      * @return Whether deferred startup has been completed.
      */
     @VisibleForTesting
     public boolean isDeferredStartupCompleteForApp() {
         return mDeferredStartupCompletedForApp;
     }
 }