Simplify sampling rate calculation

src/cpu-profiler.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 434 matching lines @@
     if (!sampler->IsActive()) {
       sampler->Start();
       need_to_stop_sampler_ = true;
     }
   }
 }
 
 
 CpuProfile* CpuProfiler::StopProfiling(const char* title) {
   if (!is_profiling_) return NULL;
-  const double actual_sampling_rate = generator_->actual_sampling_rate();
   StopProcessorIfLastProfile(title);
-  CpuProfile* result = profiles_->StopProfiling(title, actual_sampling_rate);
+  CpuProfile* result = profiles_->StopProfiling(title);
   if (result != NULL) {
     result->Print();
   }
   return result;
 }
 
 
 CpuProfile* CpuProfiler::StopProfiling(String* title) {
   if (!is_profiling_) return NULL;
-  const double actual_sampling_rate = generator_->actual_sampling_rate();
   const char* profile_title = profiles_->GetName(title);
   StopProcessorIfLastProfile(profile_title);
-  return profiles_->StopProfiling(profile_title, actual_sampling_rate);
+  return profiles_->StopProfiling(profile_title);
 }
 
 
 void CpuProfiler::StopProcessorIfLastProfile(const char* title) {
   if (profiles_->IsLastProfile(title)) StopProcessor();
 }
 
 
 void CpuProfiler::StopProcessor() {
   Logger* logger = isolate_->logger();
@@ skipping 21 matching lines @@
     ReportBuiltinEventRecord* rec = &evt_rec.ReportBuiltinEventRecord_;
     Builtins::Name id = static_cast<Builtins::Name>(i);
     rec->start = builtins->builtin(id)->address();
     rec->builtin_id = id;
     processor_->Enqueue(evt_rec);
   }
 }
 
 
 } }  // namespace v8::internal