[WebLayer] Disable failing test on ASAN

Bug: 1144282
Change-Id: I06463b63fdcf1da40816a5c8fba014ff67bdd2c7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2521148
Auto-Submit: Mugdha Lakhani <nator@chromium.org>
Commit-Queue: Colin Blundell <blundell@chromium.org>
Reviewed-by: Colin Blundell <blundell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#824795}

weblayer/browser/no_state_prefetch/no_state_prefetch_browsertest.cc

@@ -209,9 +209,13 @@ IN_PROC_BROWSER_TEST_F(NoStatePrefetchBrowserTest, LinkRelNextWithNSPDisabled) {
 
 // Non-web initiated prerender succeeds and subsequent navigations reuse
 // previously downloaded resources.
-IN_PROC_BROWSER_TEST_F(NoStatePrefetchBrowserTest, ExternalPrerender) {
-  // std::unique_ptr<PrerenderControllerImpl> controller =
-  //     PrerenderControllerImpl::Create(shell()->browser());
+// TODO(https://crbug.com/1144282): Fix failures on Asan.
+#if defined(ADDRESS_SANITIZER)
+#define MAYBE_ExternalPrerender DISABLED_ExternalPrerender
+#else
+#define MAYBE_ExternalPrerender ExternalPrerender
+#endif
+IN_PROC_BROWSER_TEST_F(NoStatePrefetchBrowserTest, MAYBE_ExternalPrerender) {
   GetProfile()->GetPrerenderController()->Prerender(
       GURL(https_server_->GetURL("/prerendered_page.html")));