Increase SubresourceFcpOrder resource delay.

chrome/browser/predictors/resource_prefetch_predictor_browsertest.cc

Index: chrome/browser/predictors/resource_prefetch_predictor_browsertest.cc
diff --git a/chrome/browser/predictors/resource_prefetch_predictor_browsertest.cc b/chrome/browser/predictors/resource_prefetch_predictor_browsertest.cc
index 306f3987c2d0b5192a0022dc01c317da1bb634aa..03bd3d3fad24870cfad760a8bff170b62402a5b1 100644
--- a/chrome/browser/predictors/resource_prefetch_predictor_browsertest.cc
+++ b/chrome/browser/predictors/resource_prefetch_predictor_browsertest.cc
@@ -783,7 +783,7 @@ IN_PROC_BROWSER_TEST_F(ResourcePrefetchPredictorBrowserTest,
       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);