Move SimulatorHelper into V8 out of profiler clients.

src/log.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/log.h"
 
 #include <cstdarg>
 #include <memory>
 #include <sstream>
 
@@ skipping 627 matching lines @@
 
   void ClearProfiler() {
     profiler_ = nullptr;
     if (IsActive()) Stop();
     DecreaseProfilingDepth();
     sampling_thread_->Join();
   }
 
   void SampleStack(const v8::RegisterState& state) override {
     if (!profiler_) return;
-#if defined(USE_SIMULATOR)
-    Isolate* i_isolate = reinterpret_cast<Isolate*>(isolate());
-    v8::RegisterState regs;
-    if (!SimulatorHelper::FillRegisters(i_isolate, &regs)) return;
-#else
-    const v8::RegisterState& regs = state;
-#endif
-    v8::TickSample sample;
-    sample.Init(isolate(), regs, v8::TickSample::kIncludeCEntryFrame, true);
+    Isolate* isolate = reinterpret_cast<Isolate*>(this->isolate());
+    TickSample sample;
+    sample.Init(isolate, state, TickSample::kIncludeCEntryFrame, true);
     profiler_->Insert(&sample);
   }
 
  private:
   Profiler* profiler_;
   SamplingThread* sampling_thread_;
 };
 
 
 //
@@ skipping 1195 matching lines @@
 
   if (profiler_listener_.get() != nullptr) {
     removeCodeEventListener(profiler_listener_.get());
   }
 
   return log_->Close();
 }
 
 }  // namespace internal
 }  // namespace v8