Mark test-cpu-profiler/NativeFrameStackTrace test as flaky

BUG=v8:7202
TBR=mstarzinger@chromium.org

Change-Id: I5399eab9a04edf98d57ee9e18be76e69f7cc9fa2
Reviewed-on: https://chromium-review.googlesource.com/823566Reviewed-by: Alexei Filippov <alph@chromium.org>
Commit-Queue: Alexei Filippov <alph@chromium.org>
Cr-Commit-Position: refs/heads/master@{#50059}

test/cctest/cctest.status

@@ -82,6 +82,9 @@
   'test-cpu-profiler/SampleWhenFrameIsNotSetup': [SKIP],
   'test-sampler/LibSamplerCollectSample': [SKIP],
 
+  # BUG(7202). The test is flaky.
+  'test-cpu-profiler/NativeFrameStackTrace': [SKIP],
+
   # BUG(7054)
   'test-cpu-profiler/StaticCollectSampleAPI': [SKIP],