Use new app-level object instantiation mechanism

chrome/android/java/src/org/chromium/chrome/browser/instantapps/InstantAppsHandler.java

 // Copyright 2016 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.instantapps;
 
 import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.StrictMode;
@@ skipping 87 matching lines @@
      * A histogram to record how long the GMS Core API call took when the instant app was not found.
      */
     private static final TimesHistogramSample sInstantAppsApiCallTimesNoApp =
             new TimesHistogramSample("Android.InstantApps.ApiCallDurationWithoutApp",
                     TimeUnit.MILLISECONDS);
 
     /** @return The singleton instance of {@link InstantAppsHandler}. */
     public static InstantAppsHandler getInstance() {
         synchronized (INSTANCE_LOCK) {
             if (sInstance == null) {
-                Context appContext = ContextUtils.getApplicationContext();
-                sInstance = ((ChromeApplication) appContext).createInstantAppsHandler();
+                sInstance = ChromeApplication.createObject(InstantAppsHandler.class);
             }
         }
         return sInstance;
     }
 
     /**
      * Check the cached value to figure out if the feature is enabled. We have to use the cached
      * value because native library hasn't yet been loaded.
      * @param context The application context.
      * @return Whether the feature is enabled.
@@ skipping 232 matching lines @@
     /**
      * Gets the instant app intent for the given URL if one exists.
      *
      * @param url The URL whose instant app this is associated with.
      * @return An instant app intent for the URL if one exists.
      */
     public Intent getInstantAppIntentForUrl(String url) {
         return null;
     }
 }