[Tracing] Remove State Sampling Profiling

src/d8.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 <errno.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/stat.h>
 
 #include <algorithm>
@@ skipping 178 matching lines @@
 namespace tracing {
 
 namespace {
 
 // String options that can be used to initialize TraceOptions.
 const char kRecordUntilFull[] = "record-until-full";
 const char kRecordContinuously[] = "record-continuously";
 const char kRecordAsMuchAsPossible[] = "record-as-much-as-possible";
 
 const char kRecordModeParam[] = "record_mode";
-const char kEnableSamplingParam[] = "enable_sampling";
 const char kEnableSystraceParam[] = "enable_systrace";
 const char kEnableArgumentFilterParam[] = "enable_argument_filter";
 const char kIncludedCategoriesParam[] = "included_categories";
 const char kExcludedCategoriesParam[] = "excluded_categories";
 
 class TraceConfigParser {
  public:
   static void FillTraceConfig(v8::Isolate* isolate,
                               platform::tracing::TraceConfig* trace_config,
                               const char* json_str) {
     HandleScope outer_scope(isolate);
     Local<Context> context = Context::New(isolate);
     Context::Scope context_scope(context);
     HandleScope inner_scope(isolate);
 
     Local<String> source =
         String::NewFromUtf8(isolate, json_str, NewStringType::kNormal)
             .ToLocalChecked();
     Local<Value> result = JSON::Parse(context, source).ToLocalChecked();
     Local<v8::Object> trace_config_object = Local<v8::Object>::Cast(result);
 
     trace_config->SetTraceRecordMode(
         GetTraceRecordMode(isolate, context, trace_config_object));
     if (GetBoolean(isolate, context, trace_config_object,
-                   kEnableSamplingParam)) {
-      trace_config->EnableSampling();
-    }
-    if (GetBoolean(isolate, context, trace_config_object,
                    kEnableSystraceParam)) {
       trace_config->EnableSystrace();
     }
     if (GetBoolean(isolate, context, trace_config_object,
                    kEnableArgumentFilterParam)) {
       trace_config->EnableArgumentFilter();
     }
     UpdateCategoriesList(isolate, context, trace_config_object,
                          kIncludedCategoriesParam, trace_config);
     UpdateCategoriesList(isolate, context, trace_config_object,
@@ skipping 2575 matching lines @@
 }
 
 }  // namespace v8
 
 
 #ifndef GOOGLE3
 int main(int argc, char* argv[]) {
   return v8::Shell::Main(argc, argv);
 }
 #endif