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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CHROME_BROWSER_UI_UMA_BROWSING_ACTIVITY_OBSERVER_H_ | 5 #ifndef CHROME_BROWSER_UI_UMA_BROWSING_ACTIVITY_OBSERVER_H_ |
6 #define CHROME_BROWSER_UI_UMA_BROWSING_ACTIVITY_OBSERVER_H_ | 6 #define CHROME_BROWSER_UI_UMA_BROWSING_ACTIVITY_OBSERVER_H_ |
7 | 7 |
8 #include "content/public/browser/notification_registrar.h" | 8 #include "content/public/browser/notification_registrar.h" |
9 #include "content/public/browser/notification_observer.h" | 9 #include "content/public/browser/notification_observer.h" |
10 | 10 |
11 namespace chrome { | 11 namespace chrome { |
12 | 12 |
13 // This object is instantiated when the first Browser object is added to the | 13 // This object is instantiated when the first Browser object is added to the |
14 // list and delete when the last one is removed. It watches for loads and | 14 // list and delete when the last one is removed. It watches for loads and |
15 // creates histograms of some global object counts. | 15 // creates histograms of some global object counts. |
16 class UMABrowsingActivityObserver : public content::NotificationObserver { | 16 class UMABrowsingActivityObserver : public content::NotificationObserver { |
17 public: | 17 public: |
18 static void Init(); | 18 static void Init(); |
19 | 19 |
20 private: | 20 private: |
21 UMABrowsingActivityObserver(); | 21 UMABrowsingActivityObserver(); |
22 virtual ~UMABrowsingActivityObserver(); | 22 ~UMABrowsingActivityObserver() override; |
23 | 23 |
24 // content::NotificationObserver implementation. | 24 // content::NotificationObserver implementation. |
25 virtual void Observe(int type, | 25 void Observe(int type, |
26 const content::NotificationSource& source, | 26 const content::NotificationSource& source, |
27 const content::NotificationDetails& details) override; | 27 const content::NotificationDetails& details) override; |
28 | 28 |
29 // Counts the number of active RenderProcessHosts and logs them. | 29 // Counts the number of active RenderProcessHosts and logs them. |
30 void LogRenderProcessHostCount() const; | 30 void LogRenderProcessHostCount() const; |
31 | 31 |
32 // Counts the number of tabs in each browser window and logs them. This is | 32 // Counts the number of tabs in each browser window and logs them. This is |
33 // different than the number of WebContents objects since WebContents objects | 33 // different than the number of WebContents objects since WebContents objects |
34 // can be used for popups and in dialog boxes. We're just counting toplevel | 34 // can be used for popups and in dialog boxes. We're just counting toplevel |
35 // tabs here. | 35 // tabs here. |
36 void LogBrowserTabCount() const; | 36 void LogBrowserTabCount() const; |
37 | 37 |
38 content::NotificationRegistrar registrar_; | 38 content::NotificationRegistrar registrar_; |
39 | 39 |
40 DISALLOW_COPY_AND_ASSIGN(UMABrowsingActivityObserver); | 40 DISALLOW_COPY_AND_ASSIGN(UMABrowsingActivityObserver); |
41 }; | 41 }; |
42 | 42 |
43 } // namespace chrome | 43 } // namespace chrome |
44 | 44 |
45 #endif // CHROME_BROWSER_UI_UMA_BROWSING_ACTIVITY_OBSERVER_H_ | 45 #endif // CHROME_BROWSER_UI_UMA_BROWSING_ACTIVITY_OBSERVER_H_ |
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