Make stack sampling profiler sample beyond startup.

chrome/browser/chrome_browser_main.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROME_BROWSER_MAIN_H_
 #define CHROME_BROWSER_CHROME_BROWSER_MAIN_H_
 
 #include <memory>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/metrics/field_trial.h"
 #include "base/profiler/stack_sampling_profiler.h"
 #include "base/tracked_objects.h"
 #include "build/build_config.h"
 #include "chrome/browser/chrome_browser_field_trials.h"
 #include "chrome/browser/chrome_process_singleton.h"
 #include "chrome/browser/first_run/first_run.h"
 #include "chrome/browser/process_singleton.h"
 #include "chrome/browser/ui/startup/startup_browser_creator.h"
 #include "chrome/common/stack_sampling_configuration.h"
+#include "components/metrics/call_stack_profile_params.h"
 #include "content/public/browser/browser_main_parts.h"
 #include "content/public/common/main_function_params.h"
 
 class BrowserProcessImpl;
 class ChromeBrowserMainExtraParts;
 class FieldTrialSynchronizer;
 class PrefService;
 class Profile;
 class StartupBrowserCreator;
 class StartupTimeBomb;
@@ skipping 114 matching lines @@
   ChromeBrowserFieldTrials browser_field_trials_;
 
 #if !defined(OS_ANDROID)
   std::unique_ptr<WebUsbDetector> web_usb_detector_;
 #endif
 
   // Vector of additional ChromeBrowserMainExtraParts.
   // Parts are deleted in the inverse order they are added.
   std::vector<ChromeBrowserMainExtraParts*> chrome_extra_parts_;
 
+  // Parameters for |sampling_profiler_|. Not const since these may be changed
+  // when transitioning from start-up profiling to periodic profiling.
+  metrics::CallStackProfileParams sampling_profiler_params_;
+
   // A profiler that periodically samples stack traces. Used to sample startup
   // behavior.
   base::StackSamplingProfiler sampling_profiler_;
 
   // Members initialized after / released before main_message_loop_ ------------
 
   std::unique_ptr<BrowserProcessImpl> browser_process_;
   scoped_refptr<metrics::TrackingSynchronizer> tracking_synchronizer_;
 
 #if !defined(OS_ANDROID)
@@ skipping 23 matching lines @@
 
   // Members initialized in PreMainMessageLoopRun, needed in
   // PreMainMessageLoopRunThreadsCreated.
   PrefService* local_state_;
   base::FilePath user_data_dir_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeBrowserMainParts);
 };
 
 #endif  // CHROME_BROWSER_CHROME_BROWSER_MAIN_H_