Store Origin-Trial tokens to ServiceWorkerDataBase

content/common/origin_trials/trial_token_validator.h

 // Copyright 2016 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_COMMON_ORIGIN_TRIALS_TRIAL_TOKEN_VALIDATOR_H_
 #define CONTENT_COMMON_ORIGIN_TRIALS_TRIAL_TOKEN_VALIDATOR_H_
 
+#include <map>
+#include <memory>
 #include <string>
+#include <vector>
 #include "base/strings/string_piece.h"
 #include "content/common/content_export.h"
 #include "url/origin.h"
 
 namespace blink {
 enum class WebOriginTrialTokenStatus;
 }
 
 namespace net {
 class HttpResponseHeaders;
 class URLRequest;
 }
 
 namespace content {
 
 namespace TrialTokenValidator {
 
+using FeatureToTokensMap = std::map<std::string /* feature_name */,
+                                    std::vector<std::string /* token */>>;
+
 // If token validates, |*feature_name| is set to the name of the feature the
 // token enables.
 // This method is thread-safe.
 CONTENT_EXPORT blink::WebOriginTrialTokenStatus ValidateToken(
     const std::string& token,
     const url::Origin& origin,
     std::string* feature_name);
 
 CONTENT_EXPORT bool RequestEnablesFeature(const net::URLRequest* request,
                                           base::StringPiece feature_name);
 
 CONTENT_EXPORT bool RequestEnablesFeature(
     const GURL& request_url,
     const net::HttpResponseHeaders* response_headers,
     base::StringPiece feature_name);
 
+CONTENT_EXPORT std::unique_ptr<FeatureToTokensMap> GetValidTokensFromHeaders(

[iclelland, 2016/10/12 03:31:39]

Can you write a comment for these two methods -- at least to mention that they
are used to re-validate previously stored tokens?

[horo, 2016/10/12 04:13:14]

Done.

+    const url::Origin& origin,
+    const net::HttpResponseHeaders* headers);
+
+CONTENT_EXPORT std::unique_ptr<FeatureToTokensMap> GetValidTokens(
+    const url::Origin& origin,
+    const FeatureToTokensMap& tokens);
+
 }  // namespace TrialTokenValidator
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_ORIGIN_TRIALS_TRIAL_TOKEN_VALIDATOR_H_