Remove profiler thread related methods from RuntimeProfiler

src/platform-freebsd.cc

Index: src/platform-freebsd.cc
diff --git a/src/platform-freebsd.cc b/src/platform-freebsd.cc
index 8c2e397ebad71ce955ca04a4c2777a9839bd909f..57d49b699aeb25dced614df62a2957b8c5111e01 100644
--- a/src/platform-freebsd.cc
+++ b/src/platform-freebsd.cc
@@ -776,7 +776,7 @@ class SignalSender : public Thread {
     ScopedLock lock(mutex_);
     SamplerRegistry::RemoveActiveSampler(sampler);
     if (SamplerRegistry::GetState() == SamplerRegistry::HAS_NO_SAMPLERS) {
-      RuntimeProfiler::StopRuntimeProfilerThreadBeforeShutdown(instance_);
+      instance_->Join();
       delete instance_;
       instance_ = NULL;
 
@@ -797,8 +797,6 @@ class SignalSender : public Thread {
       // profiled. We must not suspend.
       if (state == SamplerRegistry::HAS_CPU_PROFILING_SAMPLERS) {
         SamplerRegistry::IterateActiveSamplers(&DoCpuProfile, this);
-      } else {
-        if (RuntimeProfiler::WaitForSomeIsolateToEnterJS()) continue;
       }
       Sleep();  // TODO(svenpanne) Figure out if OS:Sleep(interval_) is enough.
     }