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// Copyright 2015 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 COMPONENTS_VARIATIONS_NET_VARIATIONS_HTTP_HEADERS_H_
#define COMPONENTS_VARIATIONS_NET_VARIATIONS_HTTP_HEADERS_H_
#include <set>
#include <string>
namespace net {
class HttpRequestHeaders;
}
class GURL;
namespace variations {
// Adds Chrome experiment and metrics state as custom headers to |headers|.
// The content of the headers will depend on |incognito|, |uma_enabled| and
// |is_signed_in| parameters. It is fine to pass false for |is_signed_in| if the
// state is not known to the caller. This will prevent addition of ids of type
// GOOGLE_WEB_PROPERTIES_SIGNED_IN, which is not the case for any ids that come
// from the variations server. These headers are never transmitted to non-Google
// web sites, which is checked based on the destination |url|.
void AppendVariationHeaders(const GURL& url,
bool incognito,
bool uma_enabled,
bool is_signed_in,
net::HttpRequestHeaders* headers);
// Returns the HTTP header names which are added by AppendVariationHeaders().
std::set<std::string> GetVariationHeaderNames();
namespace internal {
// Checks whether variation headers should be appended to requests to the
// specified |url|. Returns true for google.<TLD> and youtube.<TLD> URLs with
// the https scheme.
bool ShouldAppendVariationHeaders(const GURL& url);
} // namespace internal
} // namespace variations
#endif // COMPONENTS_VARIATIONS_NET_VARIATIONS_HTTP_HEADERS_H_
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