blob: 9dfed9eb1a070f09c88788b9ddf04bedf1813605 [file] [log] [blame]
// 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 "base/macros.h"
#include "chrome/browser/ui/tabs/tab_strip_model_stats_recorder.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
namespace chrome {
// This object is instantiated when the first Browser object is added to the
// list and delete when the last one is removed. It watches for loads and
// creates histograms of some global object counts.
class UMABrowsingActivityObserver : public content::NotificationObserver {
static void Init();
~UMABrowsingActivityObserver() override;
// content::NotificationObserver implementation.
void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) override;
// Calculates the time from an update being visible to the browser and
// the browser restarting or quitting and logs it.
void LogTimeBeforeUpdate() const;
// Counts the number of active RenderProcessHosts and logs them.
void LogRenderProcessHostCount() const;
// Counts the number of tabs in each browser window and logs them. This is
// different than the number of WebContents objects since WebContents objects
// can be used for popups and in dialog boxes. We're just counting toplevel
// tabs here.
void LogBrowserTabCount() const;
content::NotificationRegistrar registrar_;
TabStripModelStatsRecorder tab_recorder_;
} // namespace chrome