[Tracing] Remove State Sampling Profiling

test/cctest/libplatform/test-tracing.cc

 // Copyright 2016 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 <limits>
 
 #include "include/libplatform/v8-tracing.h"
 #include "src/tracing/trace-event.h"
 #include "test/cctest/cctest.h"
 
 namespace v8 {
 namespace platform {
 namespace tracing {
 
 TEST(TestTraceConfig) {
   LocalContext env;
   TraceConfig* trace_config = new TraceConfig();
-  trace_config->EnableSampling();
   trace_config->AddIncludedCategory("v8");
   trace_config->AddIncludedCategory(TRACE_DISABLED_BY_DEFAULT("v8.runtime"));
   trace_config->AddExcludedCategory("v8.cpu_profile");
 
-  CHECK_EQ(trace_config->IsSamplingEnabled(), true);
   CHECK_EQ(trace_config->IsSystraceEnabled(), false);
   CHECK_EQ(trace_config->IsArgumentFilterEnabled(), false);
   CHECK_EQ(trace_config->IsCategoryGroupEnabled("v8"), true);
   CHECK_EQ(trace_config->IsCategoryGroupEnabled("v8.cpu_profile"), false);
   CHECK_EQ(trace_config->IsCategoryGroupEnabled("v8.cpu_profile.hires"), false);
   CHECK_EQ(trace_config->IsCategoryGroupEnabled(
                TRACE_DISABLED_BY_DEFAULT("v8.runtime")),
            true);
   delete trace_config;
 }
@@ skipping 368 matching lines @@
 
   CHECK_EQ(1, observer.enabled_count);
   CHECK_EQ(1, observer.disabled_count);
 
   i::V8::SetPlatformForTesting(old_platform);
 }
 
 }  // namespace tracing
 }  // namespace platform
 }  // namespace v8