blob: 993e4c97c3b8169896523b2c20fd25d481149da0 [file] [log] [blame]
// Copyright (c) 2012 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.
#include <string>
#include <vector>
namespace content {
// Objects interested in receiving histograms derive from HistogramSubscriber.
class HistogramSubscriber {
virtual ~HistogramSubscriber() {}
// Send number of pending processes to subscriber. |end| is set to true if it
// is the last time. This is called on the UI thread.
virtual void OnPendingProcesses(int sequence_number,
int pending_processes,
bool end) = 0;
// Send |histogram| back to subscriber.
// This is called on the UI thread.
virtual void OnHistogramDataCollected(
int sequence_number,
const std::vector<std::string>& pickled_histograms) = 0;
} // namespace content