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content / public / browser / feature_observer_client.h [blame]
// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_PUBLIC_BROWSER_FEATURE_OBSERVER_CLIENT_H_
#define CONTENT_PUBLIC_BROWSER_FEATURE_OBSERVER_CLIENT_H_
#include "content/common/content_export.h"
#include "content/public/browser/global_routing_id.h"
#include "third_party/blink/public/mojom/feature_observer/feature_observer.mojom.h"
namespace content {
class CONTENT_EXPORT FeatureObserverClient {
public:
virtual ~FeatureObserverClient() {}
// These functions are invoked after the number of features of |feature_type|
// used by a frame switches between zero to non-zero. There is no guarantee
// that the frame identified by |render_process_id| and |render_frame_id|
// still exists when this is called.
virtual void OnStartUsing(GlobalRenderFrameHostId id,
blink::mojom::ObservedFeatureType feature_type) = 0;
virtual void OnStopUsing(GlobalRenderFrameHostId id,
blink::mojom::ObservedFeatureType feature_type) = 0;
};
} // namespace content
#endif // CONTENT_PUBLIC_BROWSER_FEATURE_OBSERVER_CLIENT_H_