[Tracing sampling profiler] Disable on OS X 10.16

R=nyquist@chromium.org,ssid@chromium.org

Bug: 1098119
Change-Id: I12279236117ee69bc43110f1b63262afec629a69
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2264460Reviewed-by: ssid <ssid@chromium.org>
Commit-Queue: oysteine <oysteine@chromium.org>
Cr-Commit-Position: refs/heads/master@{#782088}

services/tracing/public/cpp/stack_sampling/tracing_sampler_profiler.cc

@@ -35,6 +35,10 @@
 #include "base/android/reached_code_profiler.h"
 #endif
 
+#if defined(OS_MACOSX)
+#include "base/mac/mac_util.h"
+#endif
+
 #if defined(OS_ANDROID) && BUILDFLAG(CAN_UNWIND_WITH_CFI_TABLE) && \
     defined(OFFICIAL_BUILD)
 #include <dlfcn.h>
@@ -637,6 +641,14 @@ void TracingSamplerProfiler::StartTracing(
     return;
 #endif
 
+#if defined(OS_MACOSX)
+  // TODO(https://crbug.com/1098119): Fix unwinding on OS X 10.16. The OS has
+  // moved all system libraries into the dyld shared cache and this seems to
+  // break the sampling profiler.
+  if (base::mac::IsOSLaterThan10_15_DontCallThis())
+    return;
+#endif
+
   base::StackSamplingProfiler::SamplingParams params;
   params.samples_per_profile = std::numeric_limits<int>::max();
   params.sampling_interval = base::TimeDelta::FromMilliseconds(50);