Handle fast preresolves in test when there isn't a delay

Bug: 1073990
Change-Id: Icabcf162477719893fd0d84761bfad327ed764a1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2163253
Commit-Queue: Robert Ogden <robertogden@chromium.org>
Auto-Submit: Ryan Sturm <ryansturm@chromium.org>
Reviewed-by: Robert Ogden <robertogden@chromium.org>
Cr-Commit-Position: refs/heads/master@{#762082}

chrome/browser/navigation_predictor/navigation_predictor_preconnect_client_browsertest.cc

@@ -174,11 +174,11 @@ IN_PROC_BROWSER_TEST_F(
   ui_test_utils::NavigateToURL(browser(), url);
 
   WaitForPreresolveCount(3);
-  EXPECT_EQ(3, preresolve_done_count_);
+  EXPECT_LE(3, preresolve_done_count_);
 
   // Expect another one.
   WaitForPreresolveCount(4);
-  EXPECT_EQ(4, preresolve_done_count_);
+  EXPECT_LE(4, preresolve_done_count_);
 }
 
 // Test that we preconnect after the last preconnect timed out.