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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_LOADER_FROM_GWS_NAVIGATION_AND_KEEP_ALIVE_REQUEST_OBSERVER_H_
#define CHROME_BROWSER_LOADER_FROM_GWS_NAVIGATION_AND_KEEP_ALIVE_REQUEST_OBSERVER_H_
#include <stdint.h>
#include <optional>
#include "content/public/browser/web_contents_observer.h"
#include "services/metrics/public/cpp/ukm_source_id.h"
namespace content {
class NavigationHandle;
class RenderFrameHost;
} // namespace content
namespace network {
struct ResourceRequest;
} // namespace network
// FromGWSNavigationAndKeepAliveRequestObserver observes eligible navigations
// and fetch keepalive requests made from Google search result pages (SRP).
//
// For example, on an SRP, if any of the following happens, the observer will
// extract the category ID and stores the request & navigation for later UKM
// logging:
// - fetch("https://a.com?category=...", {keepalive: true})
// - navigate to https://b.com?category=...
class FromGWSNavigationAndKeepAliveRequestObserver
: public content::WebContentsObserver {
public:
~FromGWSNavigationAndKeepAliveRequestObserver() override;
// Not copyable or movable.
FromGWSNavigationAndKeepAliveRequestObserver(
const FromGWSNavigationAndKeepAliveRequestObserver&) = delete;
FromGWSNavigationAndKeepAliveRequestObserver& operator=(
const FromGWSNavigationAndKeepAliveRequestObserver&) = delete;
static std::unique_ptr<FromGWSNavigationAndKeepAliveRequestObserver>
MaybeCreateForWebContents(content::WebContents* web_contents);
// content::WebContentsObserver overrides:
void DidStartNavigation(
content::NavigationHandle* navigation_handle) override;
void OnKeepAliveRequestCreated(
const network::ResourceRequest& resource_request,
content::RenderFrameHost* initiator_rfh) override;
protected:
explicit FromGWSNavigationAndKeepAliveRequestObserver(
content::WebContents* web_contents);
};
#endif // CHROME_BROWSER_LOADER_FROM_GWS_NAVIGATION_AND_KEEP_ALIVE_REQUEST_OBSERVER_H_
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