Set process phases in the StackSamplingProfiler.

chrome/browser/chrome_browser_main.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 "chrome/browser/chrome_browser_main.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <set>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/at_exit.h"
 #include "base/base_switches.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/crash_logging.h"
 #include "base/debug/debugger.h"
 #include "base/feature_list.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/path_service.h"
 #include "base/profiler/scoped_tracker.h"
+#include "base/profiler/stack_sampling_profiler.h"
 #include "base/run_loop.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/sys_info.h"
 #include "base/threading/platform_thread.h"
 #include "base/time/default_tick_clock.h"
 #include "base/time/time.h"
 #include "base/trace_event/trace_event.h"
@@ skipping 2006 matching lines @@
               ::GetProcAddress(syzyasan_handle,
                                "asan_DisableDeferredFreeThread"));
       if (syzyasan_disable_deferred_free)
         syzyasan_disable_deferred_free();
     }
   }
 #endif  // defined(SYZYASAN)
 #endif  // defined(OS_ANDROID)
 }
 
+void ChromeBrowserMainParts::PreShutdown() {
+  base::StackSamplingProfiler::SetProcessMilestone(
+      metrics::CallStackProfileMetricsProvider::SHUTDOWN_START);
+}
+
 void ChromeBrowserMainParts::PostDestroyThreads() {
 #if defined(OS_ANDROID)
   // On Android, there is no quit/exit. So the browser's main message loop will
   // not finish.
   NOTREACHED();
 #else
   int restart_flags = restart_last_session_
                           ? browser_shutdown::RESTART_LAST_SESSION
                           : browser_shutdown::NO_FLAGS;
 
@@ skipping 26 matching lines @@
   chromeos::CrosSettings::Shutdown();
 #endif  // defined(OS_CHROMEOS)
 #endif  // defined(OS_ANDROID)
 }
 
 // Public members:
 
 void ChromeBrowserMainParts::AddParts(ChromeBrowserMainExtraParts* parts) {
   chrome_extra_parts_.push_back(parts);
 }