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// 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 CHROME_BROWSER_ANDROID_METRICS_UMA_SESSION_STATS_H_
#define CHROME_BROWSER_ANDROID_METRICS_UMA_SESSION_STATS_H_
#include <jni.h>
#include <string>
#include "base/memory/scoped_ptr.h"
#include "base/time/time.h"
class UserActionRateCounter;
// The native part of java UmaSessionStats class.
class UmaSessionStats {
public:
UmaSessionStats();
void UmaResumeSession(JNIEnv* env, jobject obj);
void UmaEndSession(JNIEnv* env, jobject obj);
static void RegisterSyntheticFieldTrialWithNameHash(
uint32_t trial_name_hash,
const std::string& group_name);
static void RegisterSyntheticFieldTrial(
const std::string& trial_name,
const std::string& group_name);
private:
~UmaSessionStats();
// Start of the current session, used for UMA.
base::TimeTicks session_start_time_;
int active_session_count_;
DISALLOW_COPY_AND_ASSIGN(UmaSessionStats);
};
// Registers the native methods through jni
bool RegisterUmaSessionStats(JNIEnv* env);
#endif // CHROME_BROWSER_ANDROID_METRICS_UMA_SESSION_STATS_H_
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