[Sheriff] Disable test flaking on Lacros.

ReferrerPolicyTest.ContextMenuOrigin has had many recent flakes
on Lacros, including linux-lacros-rel, linux-lacros-tester-rel,
linux-lacros-rel-rts.

ReferrerPolicyTest.HttpsContextMenuRedirect is also flaky.

(cherry picked from commit 76e09a6fd0770671bdf50e524b94d2ee193c4728)

Bug: 1269942
Change-Id: I12e58be95f2e67de5c3be699ea939ac257285303
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3279618
Commit-Queue: Katie Dektar <katie@chromium.org>
Auto-Submit: Katie Dektar <katie@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Cr-Original-Commit-Position: refs/heads/main@{#941392}
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3328281
Commit-Queue: Tomasz Wiszkowski <ender@google.com>
Owners-Override: Tomasz Wiszkowski <ender@google.com>
Auto-Submit: Tomasz Wiszkowski <ender@google.com>
Reviewed-by: Sky Malice <skym@chromium.org>
Commit-Queue: Sky Malice <skym@chromium.org>
Cr-Commit-Position: refs/branch-heads/4664@{#1266}
Cr-Branched-From: 24dc4ee75e01a29d390d43c9c264372a169273a7-refs/heads/main@{#929512}

diff --git a/chrome/browser/referrer_policy_browsertest.cc b/chrome/browser/referrer_policy_browsertest.cc
index 7950adcd..6bde556 100644
--- a/chrome/browser/referrer_policy_browsertest.cc
+++ b/chrome/browser/referrer_policy_browsertest.cc

@@ -406,7 +406,13 @@
 }
 
 // Context menu, from HTTP to HTTP.
-IN_PROC_BROWSER_TEST_F(ReferrerPolicyTest, ContextMenuOrigin) {
+// TODO(crbug.com/1269942): Flaky on Lacros.
+#if BUILDFLAG(IS_CHROMEOS_LACROS)
+#define MAYBE_ContextMenuOrigin DISABLED_ContextMenuOrigin
+#else
+#define MAYBE_ContextMenuOrigin ContextMenuOrigin
+#endif
+IN_PROC_BROWSER_TEST_F(ReferrerPolicyTest, MAYBE_ContextMenuOrigin) {
   ContextMenuNotificationObserver context_menu_observer(
       IDC_CONTENT_CONTEXT_OPENLINKNEWTAB);
   RunReferrerTest(
@@ -530,7 +536,13 @@
 }
 
 // Context menu, from HTTPS to HTTP via server redirect.
-IN_PROC_BROWSER_TEST_F(ReferrerPolicyTest, HttpsContextMenuRedirect) {
+// TODO(crbug.com/1269942): Flaky on Lacros.
+#if BUILDFLAG(IS_CHROMEOS_LACROS)
+#define MAYBE_HttpsContextMenuRedirect DISABLED_HttpsContextMenuRedirect
+#else
+#define MAYBE_HttpsContextMenuRedirect HttpsContextMenuRedirect
+#endif
+IN_PROC_BROWSER_TEST_F(ReferrerPolicyTest, MAYBE_HttpsContextMenuRedirect) {
   ContextMenuNotificationObserver context_menu_observer(
       IDC_CONTENT_CONTEXT_OPENLINKNEWTAB);
   RunReferrerTest(network::mojom::ReferrerPolicy::kOrigin, START_ON_HTTPS,