Revert "Send SIGPROF signals on the profiler event processor thread"

src/cpu-profiler.h

Index: src/cpu-profiler.h
diff --git a/src/cpu-profiler.h b/src/cpu-profiler.h
index 92c3589f8fb6aaa1b2c38159080e9c120a9f3a2e..3dc766bc75d8419e119d359dc35cd43202789510 100644
--- a/src/cpu-profiler.h
+++ b/src/cpu-profiler.h
@@ -124,9 +124,7 @@ class TickSampleEventRecord {
 // methods called by event producers: VM and stack sampler threads.
 class ProfilerEventsProcessor : public Thread {
  public:
-  ProfilerEventsProcessor(ProfileGenerator* generator,
-                          Sampler* sampler,
-                          int period_in_useconds);
+  explicit ProfilerEventsProcessor(ProfileGenerator* generator);
   virtual ~ProfilerEventsProcessor() {}
 
   // Thread control.
@@ -175,16 +173,11 @@ class ProfilerEventsProcessor : public Thread {
   // Called from events processing thread (Run() method.)
   bool ProcessCodeEvent(unsigned* dequeue_order);
   bool ProcessTicks(unsigned dequeue_order);
-  void ProcessEventsAndDoSample(unsigned* dequeue_order);
-  void ProcessEventsAndYield(unsigned* dequeue_order);
 
   INLINE(static bool FilterOutCodeCreateEvent(Logger::LogEventsAndTags tag));
 
   ProfileGenerator* generator_;
-  Sampler* sampler_;
   bool running_;
-  // Sampling period in microseconds.
-  const int period_in_useconds_;
   UnboundQueue<CodeEventsContainer> events_buffer_;
   SamplingCircularQueue ticks_buffer_;
   UnboundQueue<TickSampleEventRecord> ticks_from_vm_buffer_;