Revert of [Tracing] Use TracingCategoryObserver in runtime statistics

src/isolate.cc

 // Copyright 2012 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/isolate.h"
 
 #include <stdlib.h>
 
 #include <fstream>  // NOLINT(readability/streams)
 #include <sstream>
@@ skipping 24 matching lines @@
 #include "src/isolate-inl.h"
 #include "src/libsampler/sampler.h"
 #include "src/log.h"
 #include "src/messages.h"
 #include "src/profiler/cpu-profiler.h"
 #include "src/prototype.h"
 #include "src/regexp/regexp-stack.h"
 #include "src/runtime-profiler.h"
 #include "src/simulator.h"
 #include "src/snapshot/deserializer.h"
-#include "src/tracing/tracing-category-observer.h"
 #include "src/v8.h"
 #include "src/version.h"
 #include "src/vm-state-inl.h"
 #include "src/wasm/wasm-module.h"
 #include "src/zone/accounting-allocator.h"
 
 namespace v8 {
 namespace internal {
 
 base::Atomic32 ThreadId::highest_thread_id_ = 0;
@@ skipping 2675 matching lines @@
     if (FLAG_turbo_stats_nvp) {
       AsPrintableStatistics ps = {*turbo_statistics(), true};
       os << ps << std::endl;
     }
   }
   if (hstatistics() != nullptr) hstatistics()->Print();
   delete turbo_statistics_;
   turbo_statistics_ = nullptr;
   delete hstatistics_;
   hstatistics_ = nullptr;
-  if (V8_UNLIKELY(FLAG_runtime_stats ==
-                  v8::tracing::TracingCategoryObserver::ENABLED_BY_NATIVE)) {
+  if (FLAG_runtime_call_stats &&
+      !TRACE_EVENT_RUNTIME_CALL_STATS_TRACING_ENABLED()) {
     OFStream os(stdout);
     counters()->runtime_call_stats()->Print(os);
     counters()->runtime_call_stats()->Reset();
   }
 }
 
 
 HStatistics* Isolate::GetHStatistics() {
   if (hstatistics() == NULL) set_hstatistics(new HStatistics());
   return hstatistics();
@@ skipping 734 matching lines @@
   // Then check whether this scope intercepts.
   if ((flag & intercept_mask_)) {
     intercepted_flags_ |= flag;
     return true;
   }
   return false;
 }
 
 }  // namespace internal
 }  // namespace v8