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// Copyright (c) 2013 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_METRICS_CHROME_BROWSER_MAIN_EXTRA_PARTS_METRICS_H_
#define CHROME_BROWSER_METRICS_CHROME_BROWSER_MAIN_EXTRA_PARTS_METRICS_H_
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/memory/scoped_ptr.h"
#include "chrome/browser/chrome_browser_main_extra_parts.h"
#include "chrome/browser/metrics/first_web_contents_profiler.h"
#include "ui/gfx/display_observer.h"
class ChromeBrowserMainParts;
namespace chrome {
void AddMetricsExtraParts(ChromeBrowserMainParts* main_parts);
}
class ChromeBrowserMainExtraPartsMetrics
: public ChromeBrowserMainExtraParts,
public gfx::DisplayObserver,
public FirstWebContentsProfiler::Delegate {
public:
ChromeBrowserMainExtraPartsMetrics();
~ChromeBrowserMainExtraPartsMetrics() override;
// Overridden from ChromeBrowserMainExtraParts:
void PreProfileInit() override;
void PreBrowserStart() override;
void PostBrowserStart() override;
private:
#if defined(OS_MACOSX) && !defined(OS_IOS)
// Records Mac specific metrics.
void RecordMacMetrics();
#endif // defined(OS_MACOSX) && !defined(OS_IOS)
// DisplayObserver overrides.
virtual void OnDisplayAdded(const gfx::Display& new_display) override;
virtual void OnDisplayRemoved(const gfx::Display& old_display) override;
virtual void OnDisplayMetricsChanged(const gfx::Display& display,
uint32_t changed_metrics) override;
// FirstWebContentsProfilerDelegate overrides.
void ProfilerFinishedCollectingMetrics() override;
// If the number of displays has changed, emit a UMA metric.
void EmitDisplaysChangedMetric();
// A cached value for the number of displays.
int display_count_;
// True iff |this| instance is registered as an observer of the native
// screen.
bool is_screen_observer_;
// Measures start up performance of the first active web contents.
scoped_ptr<FirstWebContentsProfiler> first_web_contents_profiler_;
DISALLOW_COPY_AND_ASSIGN(ChromeBrowserMainExtraPartsMetrics);
};
#endif // CHROME_BROWSER_METRICS_CHROME_BROWSER_MAIN_EXTRA_PARTS_METRICS_H_
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