[test] Skip flaky tests

See referenced bugs for links.

NOTRY=true

Bug: v8:5193,v8:7702
Change-Id: I380479405f46cfc32d6cfa728fb86297f6d4f43c
Reviewed-on: https://chromium-review.googlesource.com/1032436Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52834}

test/cctest/cctest.status

@@ -73,6 +73,7 @@
   'test-heap/OutOfMemory': [SKIP],
 
   # BUG(5193). The cpu profiler tests are notoriously flaky.
+  'test-profile-generator/RecordStackTraceAtStartProfiling': [SKIP],
   'test-cpu-profiler/CollectCpuProfile': [SKIP],
   'test-cpu-profiler/CollectCpuProfileSamples': [SKIP],
   'test-cpu-profiler/CollectDeoptEvents': [SKIP],
@@ -91,6 +92,9 @@
   'test-cpu-profiler/TracingCpuProfiler': [SKIP],
   'test-sampler/LibSamplerCollectSample': [SKIP],
 
+  # BUG(7702). Flaky data race and other test failures.
+  'test-cpu-profiler/MultipleProfilers': [SKIP],
+
   # BUG(7202). The test is flaky.
   'test-cpu-profiler/NativeFrameStackTrace': [SKIP],