sheriff: Disable BackForwardCacheBrowserTest.DoesNotCacheIfRecordingAudio

Example failed run:

https://ci.chromium.org/p/chromium/builders/ci/Linux%20CFI/16572

TBR=altimin@chromium.org

Bug: 1054194
Change-Id: I955aa5674f3b5896b5360d1b9be6d450820f4b9a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2086383Reviewed-by: Giovanni Ortuño Urquidi <ortuno@chromium.org>
Commit-Queue: Giovanni Ortuño Urquidi <ortuno@chromium.org>
Cr-Commit-Position: refs/heads/master@{#746677}

content/browser/back_forward_cache_browsertest.cc

@@ -1538,8 +1538,14 @@ IN_PROC_BROWSER_TEST_F(BackForwardCacheBrowserTest,
   }
 }
 
+// Flaky on Linux: https://crbug.com/1054194
+#if defined(OS_LINUX)
+#define MAYBE_DoesNotCacheIfRecordingAudio DISABLED_DoesNotCacheIfRecordingAudio
+#else
+#define MAYBE_DoesNotCacheIfRecordingAudio DoesNotCacheIfRecordingAudio
+#endif
 IN_PROC_BROWSER_TEST_F(BackForwardCacheBrowserTest,
-                       DoesNotCacheIfRecordingAudio) {
+                       MAYBE_DoesNotCacheIfRecordingAudio) {
   ASSERT_TRUE(embedded_test_server()->Start());
 
   // Navigate to an empty page.