Increase SubresourceFcpOrder resource delay.

chrome/browser/predictors/resource_prefetch_predictor_browsertest.cc

 // 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.
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <set>
 
 #include "base/command_line.h"
@@ skipping 765 matching lines @@
 IN_PROC_BROWSER_TEST_F(ResourcePrefetchPredictorBrowserTest,
                        SubresourceFcpOrder) {
   AddResource(GetURL(kStylePath), content::RESOURCE_TYPE_STYLESHEET,
               net::HIGHEST);
   AddResource(GetURL(kScriptPath), content::RESOURCE_TYPE_SCRIPT, net::MEDIUM);
 
   ResourceSummary* image = AddResource(
       GetURL(kImagePath), content::RESOURCE_TYPE_IMAGE, net::LOWEST);
   // Delay HTTP response to ensure enough time to receive notice of
   // firstContentfulPaint.
-  image->delay = base::TimeDelta::FromMilliseconds(1500);
+  image->delay = base::TimeDelta::FromMilliseconds(2500);
   image->request.before_first_contentful_paint = false;
 
   TestLearningAndPrefetching(GetURL(kHtmlFcpOrderPath), true);
 }
 
 IN_PROC_BROWSER_TEST_F(ResourcePrefetchPredictorBrowserTest, Redirect) {
   GURL initial_url = GetURLWithHost(kFooHost, kRedirectPath);
   GURL redirected_url =
       GetPageURLWithReplacements(kBarHost, kHtmlSubresourcesPath);
   AddRedirectChain(initial_url,
@@ skipping 212 matching lines @@
   AddResourcesFromSubresourceHtml();
 
   NavigateToURLAndCheckSubresources(initial_url);
   ClearCache();
   NavigateToURLAndCheckSubresources(initial_url);
   ClearCache();
   NavigateToURLAndCheckPrefetching(initial_url);
 }
 
 }  // namespace predictors