Send SIGPROF signals on the profiler event processor thread

src/platform-openbsd.cc

Index: src/platform-openbsd.cc
diff --git a/src/platform-openbsd.cc b/src/platform-openbsd.cc
index 66eac22aa50e5deae0dd2ef2bec3d4e7ff7b8770..ac0421e07d58f45410d6bf991654dde4b36ed237 100644
--- a/src/platform-openbsd.cc
+++ b/src/platform-openbsd.cc
@@ -955,4 +955,21 @@ void Sampler::Stop() {
 }
 
 
+bool Sampler::CanSampleOnProflerEventsProcessorThread() {
+  return false;
+}
+
+
+void Sampler::DoSample() {
+}
+
+
+void Sampler::StartProfiling() {
+}
+
+
+void Sampler::StopProfiling() {
+}
+
+
 } }  // namespace v8::internal