blob: 368a019d04743de746f12638a93f18c8ddbb5864 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
|
// Copyright 2015 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 COMPONENTS_PAGE_LOAD_METRICS_BROWSER_PAGE_LOAD_METRICS_UTIL_H_
#define COMPONENTS_PAGE_LOAD_METRICS_BROWSER_PAGE_LOAD_METRICS_UTIL_H_
#include "base/metrics/histogram_macros.h"
#include "base/time/time.h"
#define PAGE_LOAD_HISTOGRAM(name, sample) \
UMA_HISTOGRAM_CUSTOM_TIMES(name, sample, \
base::TimeDelta::FromMilliseconds(10), \
base::TimeDelta::FromMinutes(10), 100)
namespace page_load_metrics {
struct PageLoadExtraInfo;
struct PageLoadTiming;
// Returns false for events for which we have no timing information, and events
// that happened on a page that had been in the background. When a page is
// backgrounded, some events (e.g. paint) are delayed. Since these data points
// can skew the mean, they should not be mixed with timing events that occurred
// in the foreground.
bool EventOccurredInForeground(const base::TimeDelta& event,
const PageLoadExtraInfo& info);
} // namespace page_load_metrics
#endif // COMPONENTS_PAGE_LOAD_METRICS_BROWSER_PAGE_LOAD_METRICS_UTIL_H_
|
