tracing: remove sampling state profiler

components/tracing/browser/trace_config_file_unittest.cc

 // Copyright (c) 2015 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 "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "components/tracing/browser/trace_config_file.h"
 #include "components/tracing/common/tracing_switches.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace tracing {
 
 namespace {
 
 const char kTraceConfig[] =
   "{"
     "\"enable_argument_filter\":true,"
-    "\"enable_sampling\":true,"
     "\"enable_systrace\":true,"
     "\"excluded_categories\":[\"excluded\",\"exc_pattern*\"],"
     "\"included_categories\":[\"included\","
                              "\"inc_pattern*\","
                              "\"disabled-by-default-cc\"],"
     "\"record_mode\":\"record-continuously\","
     "\"synthetic_delays\":[\"test.Delay1;16\",\"test.Delay2;32\"]"
   "}";
 
 std::string GetTraceConfigFileContent(std::string trace_config,
@@ skipping 211 matching lines @@
   ASSERT_TRUE(temp_dir.CreateUniqueTempDir());
   ASSERT_TRUE(
       base::CreateTemporaryFileInDir(temp_dir.GetPath(), &trace_config_file));
   base::CommandLine::ForCurrentProcess()->AppendSwitchPath(
       switches::kTraceConfigFile, trace_config_file);
 
   EXPECT_FALSE(TraceConfigFile::GetInstance()->IsEnabled());
 }
 
 } // namespace tracing