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// 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_CHROME_METRICS_SERVICE_ACCESSOR_H_
#define CHROME_BROWSER_METRICS_CHROME_METRICS_SERVICE_ACCESSOR_H_
#include <stdint.h>
#include <string>
#include "base/gtest_prod_util.h"
#include "base/macros.h"
#include "chrome/browser/metrics/metrics_reporting_state.h"
#include "components/metrics/metrics_service_accessor.h"
class ChromeExtensionDownloaderFactory;
class PrefService;
class Profile;
namespace {
class CrashesDOMHandler;
class FlashDOMHandler;
}
namespace component_updater {
class ComponentUpdateService;
void RegisterSwReporterComponent(ComponentUpdateService* cus,
PrefService* prefs);
}
namespace extensions {
class MetricsPrivateGetIsCrashReportingEnabledFunction;
class FileManagerPrivateIsUMAEnabledFunction;
}
namespace prerender {
bool IsOmniboxEnabled(Profile* profile);
}
namespace system_logs {
class ChromeInternalLogSource;
}
namespace options {
class BrowserOptionsHandler;
}
// This class limits and documents access to metrics service helper methods.
// Since these methods are private, each user has to be explicitly declared
// as a 'friend' below.
class ChromeMetricsServiceAccessor : public metrics::MetricsServiceAccessor {
private:
friend void component_updater::RegisterSwReporterComponent(
component_updater::ComponentUpdateService* cus,
PrefService* prefs);
friend bool prerender::IsOmniboxEnabled(Profile* profile);
friend class ChromeExtensionDownloaderFactory;
friend class ChromeRenderMessageFilter;
friend class ::CrashesDOMHandler;
friend class DataReductionProxyChromeSettings;
friend class extensions::MetricsPrivateGetIsCrashReportingEnabledFunction;
friend class extensions::FileManagerPrivateIsUMAEnabledFunction;
friend class ::FlashDOMHandler;
friend class system_logs::ChromeInternalLogSource;
friend class UmaSessionStats;
friend class options::BrowserOptionsHandler;
friend void InitiateMetricsReportingChange(
bool, const OnMetricsReportingCallbackType&);
friend class MetricsServicesManager;
FRIEND_TEST_ALL_PREFIXES(ChromeMetricsServiceAccessorTest,
MetricsReportingEnabled);
FRIEND_TEST_ALL_PREFIXES(ChromeMetricsServiceAccessorTest,
CrashReportingEnabled);
// Returns true if prefs::kMetricsReportingEnabled is set.
// TODO(asvitkine): Consolidate the method in MetricsStateManager.
// TODO(asvitkine): This function does not report the correct value on
// Android and ChromeOS, see http://crbug.com/362192.
static bool IsMetricsReportingEnabled();
// Returns true if crash reporting is enabled. This is set at the platform
// level for Android and ChromeOS, and otherwise is the same as
// IsMetricsReportingEnabled for desktop Chrome.
static bool IsCrashReportingEnabled();
// Registers a field trial name and group to be used to annotate a UMA report
// with a particular Chrome configuration state. A UMA report will be
// annotated with this trial group if and only if all events in the report
// were created after the trial is registered. Only one group name may be
// registered at a time for a given trial name. Only the last group name that
// is registered for a given trial name will be recorded. The values passed
// in must not correspond to any real field trial in the code.
static bool RegisterSyntheticFieldTrial(const std::string& trial_name,
const std::string& group_name);
// Same as RegisterSyntheticFieldTrial above, but takes a hash for the trial
// name, rather than computing it from the string.
static bool RegisterSyntheticFieldTrialWithNameHash(
uint32_t trial_name_hash,
const std::string& group_name);
DISALLOW_IMPLICIT_CONSTRUCTORS(ChromeMetricsServiceAccessor);
};
#endif // CHROME_BROWSER_METRICS_CHROME_METRICS_SERVICE_ACCESSOR_H_
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