[test] Skip flaky test under tsan

NOTRY=true
TBR=ulan@chromium.org

Bug: chromium:794911
Change-Id: Ib7be4b44f796153d3972afc878a8ec4911327576
Reviewed-on: https://chromium-review.googlesource.com/827067Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50111}

test/cctest/cctest.status

@@ -201,6 +201,9 @@
   'test-cpu-profiler/TickEvents': [SKIP],
   # BUG(v8:6924). The test allocates a lot of memory.
   'test-api/NewStringRangeError': [PASS, NO_VARIANTS],
+
+  # BUG(chromium:794911).
+  'test-cpu-profiler/TracingCpuProfiler': [SKIP],
 }],  # 'tsan == True'
 
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