Send SIGPROF signals on the profiler event processor thread

src/platform-nullos.cc

Index: src/platform-nullos.cc
diff --git a/src/platform-nullos.cc b/src/platform-nullos.cc
index 0fef0633e9b0e5c9f05fc5b16ee126244c9473f9..42e3a54369bd9f4b11f256a1bc33f5e1106b6cae 100644
--- a/src/platform-nullos.cc
+++ b/src/platform-nullos.cc
@@ -525,4 +525,25 @@ void ProfileSampler::Stop() {
 }
 
 
+bool Sampler::CanSampleOnProflerEventsProcessorThread() {
+  UNIMPLEMENTED();
+  return false;
+}
+
+
+void Sampler::DoSample() {
+  UNIMPLEMENTED();
+}
+
+
+void Sampler::StartProfiling() {
+  UNIMPLEMENTED();
+}
+
+
+void Sampler::StopProfiling() {
+  UNIMPLEMENTED();
+}
+
+
 } }  // namespace v8::internal