Revert of [Tracing] Embed V8 runtime call stats into tracing.

src/objects.cc

 // Copyright 2015 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/objects.h"
 
 #include <cmath>
 #include <iomanip>
 #include <memory>
 #include <sstream>
@@ skipping 9179 matching lines @@
 
 
 Handle<Map> Map::TransitionToDataProperty(Handle<Map> map, Handle<Name> name,
                                           Handle<Object> value,
                                           PropertyAttributes attributes,
                                           StoreFromKeyed store_mode) {
   RuntimeCallTimerScope stats_scope(
       *map, map->is_prototype_map()
                 ? &RuntimeCallStats::PrototypeMap_TransitionToDataProperty
                 : &RuntimeCallStats::Map_TransitionToDataProperty);
-  TRACE_EVENT_RUNTIME_CALL_STATS_TRACING_SCOPED(
-      map->GetIsolate(),
-      (map->is_prototype_map()
-           ? &tracing::TraceEventStatsTable::
-                 PrototypeMap_TransitionToDataProperty
-           : &tracing::TraceEventStatsTable::Map_TransitionToDataProperty))
 
   DCHECK(name->IsUniqueName());
   DCHECK(!map->is_dictionary_map());
 
   // Migrate to the newest map before storing the property.
   map = Update(map);
 
   Map* maybe_transition =
       TransitionArray::SearchTransition(*map, kData, *name, attributes);
   if (maybe_transition != NULL) {
@@ skipping 66 matching lines @@
 Handle<Map> Map::TransitionToAccessorProperty(Isolate* isolate, Handle<Map> map,
                                               Handle<Name> name, int descriptor,
                                               Handle<Object> getter,
                                               Handle<Object> setter,
                                               PropertyAttributes attributes) {
   RuntimeCallTimerScope stats_scope(
       isolate,
       map->is_prototype_map()
           ? &RuntimeCallStats::PrototypeMap_TransitionToAccessorProperty
           : &RuntimeCallStats::Map_TransitionToAccessorProperty);
-  TRACE_EVENT_RUNTIME_CALL_STATS_TRACING_SCOPED(
-      isolate,
-      (map->is_prototype_map()
-           ? &tracing::TraceEventStatsTable::
-                 PrototypeMap_TransitionToAccessorProperty
-           : &tracing::TraceEventStatsTable::Map_TransitionToAccessorProperty));
 
   // At least one of the accessors needs to be a new value.
   DCHECK(!getter->IsNull(isolate) || !setter->IsNull(isolate));
   DCHECK(name->IsUniqueName());
 
   // Dictionary maps can always have additional data properties.
   if (map->is_dictionary_map()) return map;
 
   // Migrate to the newest map before transitioning to the new property.
   map = Update(map);
@@ skipping 2876 matching lines @@
       handle(Smi::FromInt(Map::kPrototypeChainValid), isolate));
   proto_info->set_validity_cell(*cell);
   return cell;
 }
 
 
 // static
 void Map::SetPrototype(Handle<Map> map, Handle<Object> prototype,
                        PrototypeOptimizationMode proto_mode) {
   RuntimeCallTimerScope stats_scope(*map, &RuntimeCallStats::Map_SetPrototype);
-  TRACE_EVENT_RUNTIME_CALL_STATS_TRACING_SCOPED(
-      map->GetIsolate(), &tracing::TraceEventStatsTable::Map_SetPrototype);
 
   bool is_hidden = false;
   if (prototype->IsJSObject()) {
     Handle<JSObject> prototype_jsobj = Handle<JSObject>::cast(prototype);
     JSObject::OptimizeAsPrototype(prototype_jsobj, proto_mode);
 
     Object* maybe_constructor = prototype_jsobj->map()->GetConstructor();
     if (maybe_constructor->IsJSFunction()) {
       JSFunction* constructor = JSFunction::cast(maybe_constructor);
       Object* data = constructor->shared()->function_data();
@@ skipping 6845 matching lines @@
   for (PrototypeIterator iter(isolate, this, kStartAtReceiver,
                               PrototypeIterator::END_AT_NULL);
        !iter.IsAtEnd(); iter.AdvanceIgnoringProxies()) {
     if (iter.GetCurrent<Object>()->IsJSProxy()) return true;
   }
   return false;
 }
 
 }  // namespace internal
 }  // namespace v8