tracing: remove sampling state profiler

content/browser/webrtc/webrtc_getusermedia_browsertest.cc

 // Copyright 2014 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 <stddef.h>
 
 #include "base/command_line.h"
 #include "base/json/json_reader.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/strings/stringprintf.h"
@@ skipping 75 matching lines @@
     // Automatically grant device permission.
     AppendUseFakeUIForMediaStreamFlag();
   }
   ~WebRtcGetUserMediaBrowserTest() override {}
 
   void StartTracing() {
     CHECK(trace_log_ == NULL) << "Can only can start tracing once";
     trace_log_ = base::trace_event::TraceLog::GetInstance();
     base::trace_event::TraceConfig trace_config(
         "video", base::trace_event::RECORD_UNTIL_FULL);
-    trace_config.EnableSampling();
     trace_log_->SetEnabled(trace_config,
                            base::trace_event::TraceLog::RECORDING_MODE);
     // Check that we are indeed recording.
     EXPECT_EQ(trace_log_->GetNumTracesRecorded(), 1);
   }
 
   void StopTracing() {
     CHECK(message_loop_runner_.get() == NULL)
         << "Calling StopTracing more than once";
 
@@ skipping 611 matching lines @@
 
   std::string call =
       GenerateGetUserMediaWithMandatorySourceID(
           "getUserMediaInIframeAndCloseInFailureCb", "invalid", "invalid");
   NavigateToURL(shell(), url);
 
   ExecuteJavascriptAndWaitForOk(call);
 }
 
 }  // namespace content