tracing: remove sampling state profiler

content/browser/tracing/tracing_ui.cc

 // Copyright (c) 2012 The Chromium 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 "content/browser/tracing/tracing_ui.h"
 
 #include <stddef.h>
 
 #include <memory>
 #include <set>
@@ skipping 76 matching lines @@
   options_ok &= options->GetString("tracingRecordMode", &record_mode);
 
   *trace_config = base::trace_event::TraceConfig(category_filter_string,
                                                  record_mode);
 
   bool enable_systrace;
   options_ok &= options->GetBoolean("useSystemTracing", &enable_systrace);
   if (enable_systrace)
     trace_config->EnableSystrace();
 
-  bool enable_sampling;
-  options_ok &= options->GetBoolean("useSampling", &enable_sampling);
-  if (enable_sampling)
-    trace_config->EnableSampling();
-
   if (!options_ok) {
     LOG(ERROR) << "Malformed options";
     return false;
   }
   return true;
 }
 
 void OnRecordingEnabledAck(const WebUIDataSource::GotDataCallback& callback);
 
 bool BeginRecording(const std::string& data64,
@@ skipping 209 matching lines @@
     web_ui()->CallJavascriptFunctionUnsafe("onUploadComplete",
                                            base::StringValue(feedback));
   } else {
     web_ui()->CallJavascriptFunctionUnsafe("onUploadError",
                                            base::StringValue(feedback));
   }
   trace_uploader_.reset();
 }
 
 }  // namespace content