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/task_scheduler/task_scheduler.h"
 #include "base/threading/platform_thread.h"
 #include "base/time/default_tick_clock.h"
 #include "base/time/time.h"
@@ skipping 879 matching lines @@
   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PostMainMessageLoopStart");
 
   // device_event_log must be initialized after the message loop. Calls to
   // {DEVICE}_LOG prior to here will only be logged with VLOG. Some
   // platforms (e.g. chromeos) may have already initialized this.
   if (!device_event_log::IsInitialized())
     device_event_log::Initialize(0 /* default max entries */);
 
   for (size_t i = 0; i < chrome_extra_parts_.size(); ++i)
     chrome_extra_parts_[i]->PostMainMessageLoopStart();
+
+  base::StackSamplingProfiler::SetProcessPhase(
+      metrics::CallStackProfileMetricsProvider::MAIN_LOOP_START);
 }
 
 int ChromeBrowserMainParts::PreCreateThreads() {
   TRACE_EVENT0("startup", "ChromeBrowserMainParts::PreCreateThreads");
   result_code_ = PreCreateThreadsImpl();
 
   if (result_code_ == content::RESULT_CODE_NORMAL_EXIT) {
 #if !defined(OS_ANDROID)
     // These members must be initialized before exiting this function normally.
     DCHECK(master_prefs_.get());
@@ skipping 1149 matching lines @@
   // to bypass this code.  Perhaps we need a *final* hook that is called on all
   // paths from content/browser/browser_main.
   CHECK(metrics::MetricsService::UmaMetricsProperlyShutdown());
 
 #if defined(OS_CHROMEOS)
   chromeos::CrosSettings::Shutdown();
 #endif  // defined(OS_CHROMEOS)
 #endif  // defined(OS_ANDROID)
 }
 
+void ChromeBrowserMainParts::PreShutdown() {
+  base::StackSamplingProfiler::SetProcessPhase(
+      metrics::CallStackProfileMetricsProvider::SHUTDOWN_START);
+}
+
 // Public members:
 
 void ChromeBrowserMainParts::AddParts(ChromeBrowserMainExtraParts* parts) {
   chrome_extra_parts_.push_back(parts);
 }