chromium/content/public/browser/host_zoom_map.h

// Copyright 2012 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_HOST_ZOOM_MAP_H_
#define CONTENT_PUBLIC_BROWSER_HOST_ZOOM_MAP_H_

#include <map>
#include <memory>
#include <string>
#include <vector>

#include "base/callback_list.h"
#include "base/functional/callback.h"
#include "base/time/time.h"
#include "content/common/content_export.h"
#include "url/gurl.h"

namespace base {
class Clock;
}

namespace content {

class NavigationEntry;
class BrowserContext;
class SiteInstance;
class StoragePartition;
class WebContents;
struct GlobalRenderFrameHostId;

// Maps hostnames to custom zoom levels.  Written on the UI thread and read on
// any thread.  One instance per browser context. Must be created on the UI
// thread, and it'll delete itself on the UI thread as well.
// Zoom can be defined at three levels: default zoom, zoom for host, and zoom
// for host with specific scheme. Setting any of the levels leaves settings
// for other settings intact. Getting the zoom level starts at the most
// specific setting and progresses to the less specific: first the zoom for the
// host and scheme pair is checked, secondly the zoom for the host only and
// lastly default zoom.

class HostZoomMap { … };

}  // namespace content

#endif  // CONTENT_PUBLIC_BROWSER_HOST_ZOOM_MAP_H_