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// Copyright 2013 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 CONTENT_RENDERER_STATS_COLLECTION_CONTROLLER_H_
#define CONTENT_RENDERER_STATS_COLLECTION_CONTROLLER_H_
#include "base/macros.h"
#include "gin/wrappable.h"
namespace blink {
class WebFrame;
}
namespace content {
// This class is exposed in JS as window.statsCollectionController and provides
// functionality to read out statistics from the browser.
// Its use must be enabled specifically via the
// --enable-stats-collection-bindings command line flag.
class StatsCollectionController
: public gin::Wrappable<StatsCollectionController> {
public:
static gin::WrapperInfo kWrapperInfo;
static void Install(blink::WebFrame* frame);
private:
StatsCollectionController();
~StatsCollectionController() override;
// gin::WrappableBase
gin::ObjectTemplateBuilder GetObjectTemplateBuilder(
v8::Isolate* isolate) override;
// Retrieves a histogram and returns a JSON representation of it.
std::string GetHistogram(const std::string& histogram_name);
// Retrieves a histogram from the browser process and returns a JSON
// representation of it.
std::string GetBrowserHistogram(const std::string& histogram_name);
// Returns JSON representation of tab timing information for the current tab.
std::string GetTabLoadTiming();
DISALLOW_COPY_AND_ASSIGN(StatsCollectionController);
};
} // namespace content
#endif // CONTENT_RENDERER_STATS_COLLECTION_CONTROLLER_H_
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