chrome/browser/metrics/chrome_browser_main_extra_parts_metrics.h

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_METRICS_CHROME_BROWSER_MAIN_EXTRA_PARTS_METRICS_H_
   6 #define CHROME_BROWSER_METRICS_CHROME_BROWSER_MAIN_EXTRA_PARTS_METRICS_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/compiler_specific.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "chrome/browser/chrome_browser_main_extra_parts.h"
  12 #include "chrome/browser/metrics/first_web_contents_profiler.h"
  13 #include "ui/gfx/display_observer.h"
  14
  15 class ChromeBrowserMainParts;
  16
  17 namespace chrome {
  18 void AddMetricsExtraParts(ChromeBrowserMainParts* main_parts);
  19 }
  20
  21 namespace ui {
  22 class InputDeviceEventObserver;
  23 }  // namespace ui
  24
  25 class ChromeBrowserMainExtraPartsMetrics
  26     : public ChromeBrowserMainExtraParts,
  27       public gfx::DisplayObserver,
  28       public FirstWebContentsProfiler::Delegate {
  29  public:
  30   ChromeBrowserMainExtraPartsMetrics();
  31   ~ChromeBrowserMainExtraPartsMetrics() override;
  32
  33   // Overridden from ChromeBrowserMainExtraParts:
  34   void PreProfileInit() override;
  35   void PreBrowserStart() override;
  36   void PostBrowserStart() override;
  37
  38  private:
  39 #if defined(OS_MACOSX) && !defined(OS_IOS)
  40   // Records Mac specific metrics.
  41   void RecordMacMetrics();
  42 #endif  // defined(OS_MACOSX) && !defined(OS_IOS)
  43
  44   // DisplayObserver overrides.
  45   void OnDisplayAdded(const gfx::Display& new_display) override;
  46   void OnDisplayRemoved(const gfx::Display& old_display) override;
  47   void OnDisplayMetricsChanged(const gfx::Display& display,
  48                                uint32_t changed_metrics) override;
  49
  50   // FirstWebContentsProfilerDelegate overrides.
  51   void ProfilerFinishedCollectingMetrics() override;
  52
  53   // If the number of displays has changed, emit a UMA metric.
  54   void EmitDisplaysChangedMetric();
  55
  56   // A cached value for the number of displays.
  57   int display_count_;
  58
  59   // True iff |this| instance is registered as an observer of the native
  60   // screen.
  61   bool is_screen_observer_;
  62
  63   // Measures start up performance of the first active web contents.
  64   scoped_ptr<FirstWebContentsProfiler> first_web_contents_profiler_;
  65
  66 #if defined(USE_OZONE) || defined(USE_X11)
  67   scoped_ptr<ui::InputDeviceEventObserver> input_device_event_observer_;
  68 #endif  // defined(USE_OZONE) || defined(USE_X11)
  69
  70   DISALLOW_COPY_AND_ASSIGN(ChromeBrowserMainExtraPartsMetrics);
  71 };
  72
  73 #endif  // CHROME_BROWSER_METRICS_CHROME_BROWSER_MAIN_EXTRA_PARTS_METRICS_H_