Update chrome for new prefs location.

chrome/browser/tracing/chrome_tracing_delegate_browsertest.cc

 // Copyright 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 <utility>
 
 #include "base/base_switches.h"
 #include "base/bind.h"
 #include "base/command_line.h"
-#include "base/prefs/pref_service.h"
 #include "build/build_config.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/tracing/background_tracing_field_trial.h"
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "components/metrics/metrics_pref_names.h"
+#include "components/prefs/pref_service.h"
 #include "content/public/browser/background_tracing_config.h"
 #include "content/public/browser/background_tracing_manager.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/test/test_utils.h"
 
 namespace {
 
 class ChromeTracingDelegateBrowserTest : public InProcessBrowserTest {
  public:
   ChromeTracingDelegateBrowserTest()
@@ skipping 245 matching lines @@
 
 IN_PROC_BROWSER_TEST_F(ChromeTracingDelegateBrowserTestOnStartup,
                        StartupTracingThrottle) {
   // The startup scenario should *not* be started, since not enough
   // time has elapsed since the last upload (set in the PRE_ above).
   EXPECT_FALSE(
       content::BackgroundTracingManager::GetInstance()->HasActiveScenario());
 }
 
 }  // namespace