blob: 9d1438e11f7f9312e2d65eb80699add4006c6893 (
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
32
33
34
35
36
37
38
|
// Copyright 2014 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_METRICS_SERVICE_ACCESSOR_H_
#define CHROME_BROWSER_METRICS_METRICS_SERVICE_ACCESSOR_H_
#include <stdint.h>
#include "base/macros.h"
namespace metrics {
class MetricsService;
}
// This class limits and documents access to metrics service helper methods.
// These methods are protected so each user has to inherit own program-specific
// specialization and enable access there by declaring friends.
class MetricsServiceAccessor {
protected:
// Constructor declared as protected to enable inheritance. Descendants should
// disallow instantiation.
MetricsServiceAccessor() {}
// Registers the specified synthetic field trial (identified by a hash of the
// trial name and group name) with |metrics_service|, if the service is not
// NULL, returning true on success.
// See the comment on MetricsService::RegisterSyntheticFieldTrial for details.
static bool RegisterSyntheticFieldTrial(
metrics::MetricsService* metrics_service,
uint32_t trial_name_hash,
uint32_t group_name_hash);
private:
DISALLOW_COPY_AND_ASSIGN(MetricsServiceAccessor);
};
#endif // CHROME_BROWSER_METRICS_METRICS_SERVICE_ACCESSOR_H_
|
