[Sheriff] Disable failing perfetto test

Bug: 1269906
Change-Id: Icd3e12f9708e351942dca2a3e987056723c8c5e6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3279863
Commit-Queue: Brandon Wylie <wylieb@chromium.org>
Commit-Queue: Filip Gorski <fgorski@chromium.org>
Owners-Override: Brandon Wylie <wylieb@chromium.org>
Auto-Submit: Brandon Wylie <wylieb@chromium.org>
Reviewed-by: Filip Gorski <fgorski@chromium.org>
Cr-Commit-Position: refs/heads/main@{#941358}

services/tracing/perfetto/system_perfetto_unittest.cc

@@ -1005,7 +1005,7 @@ TEST_F(SystemPerfettoTest, RespectsFeaturePreAndroidPie) {
 }
 #endif  // defined(OS_ANDROID)
 
-TEST_F(SystemPerfettoTest, EnablePerfettoSystemTracingDefaultState) {
+TEST_F(SystemPerfettoTest, DISABLED_EnablePerfettoSystemTracingDefaultState) {
 #if defined(OS_CHROMEOS)
   EXPECT_EQ(features::kEnablePerfettoSystemTracing.default_state,
             base::FEATURE_ENABLED_BY_DEFAULT);