[Experimental Framework] Move the trial token public key out of content and into the embedder.

content/common/origin_trials/trial_token.h

 // 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 CONTENT_COMMON_ORIGIN_TRIALS_TRIAL_TOKEN_H_
 #define CONTENT_COMMON_ORIGIN_TRIALS_TRIAL_TOKEN_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 26 matching lines @@
   // it can be parsed.)
   static scoped_ptr<TrialToken> Parse(const std::string& token_text);
 
   // Returns true if this feature is appropriate for use by the given origin,
   // for the given feature name. This does not check whether the signature is
   // valid, or whether the token itself has expired.
   bool IsAppropriate(const std::string& origin,
                      const std::string& featureName) const;
 
   // Returns true if this token has a valid signature, and has not expired.
-  bool IsValid(const base::Time& now) const;
+  bool IsValid(const base::Time& now,
+               const base::StringPiece& public_key) const;
 
   std::string signature() { return signature_; }
   std::string data() { return data_; }
   GURL origin() { return origin_; }
   std::string feature_name() { return feature_name_; }
   uint64_t expiry_timestamp() { return expiry_timestamp_; }
 
  protected:
   friend class TrialTokenTest;
 
@@ skipping 29 matching lines @@
   std::string feature_name_;
 
   // The time until which this token should be considered valid, in UTC, as
   // seconds since the Unix epoch.
   uint64_t expiry_timestamp_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_ORIGIN_TRIALS_TRIAL_TOKEN_H_