Allow fetching personalized snippets from ChromeReader.

components/ntp_snippets/ntp_snippet.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 COMPONENTS_NTP_SNIPPETS_NTP_SNIPPET_H_
 #define COMPONENTS_NTP_SNIPPETS_NTP_SNIPPET_H_
 
 #include <memory>
 #include <string>
 #include <vector>
@@ skipping 82 matching lines @@
   void add_source(const SnippetSource& source) { sources_.push_back(source); }
 
   // If this snippet has all the data we need to show a full card to the user
   bool is_complete() const {
     return url().is_valid() && !sources().empty() && !title().empty() &&
            !snippet().empty() && salient_image_url().is_valid() &&
            !publish_date().is_null() && !expiry_date().is_null() &&
            !best_source().publisher_name.empty();
   }
 
+  float score() const { return score_; }
+  void set_score(float score) { score_ = score; }
+
   // Public for testing.
   static base::Time TimeFromJsonString(const std::string& timestamp_str);
   static std::string TimeToJsonString(const base::Time& time);
 
  private:
   GURL url_;
   std::string title_;
   GURL salient_image_url_;
   std::string snippet_;
   base::Time publish_date_;
   base::Time expiry_date_;
   GURL amp_url_;
-  size_t best_source_index_;
-
-  std::vector<SnippetSource> sources_;
+  float score_;
 
   DISALLOW_COPY_AND_ASSIGN(NTPSnippet);
 };
 
 }  // namespace ntp_snippets
 
 #endif  // COMPONENTS_NTP_SNIPPETS_NTP_SNIPPET_H_