Allows to dump current snippets to a json in the Downloads folder.

components/ntp_snippets/ntp_snippets_service.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_SNIPPETS_SERVICE_H_
 #define COMPONENTS_NTP_SNIPPETS_NTP_SNIPPETS_SERVICE_H_
 
 #include <stddef.h>
 
 #include <set>
@@ skipping 72 matching lines @@
   // the schedule depends on the time of day
   void RescheduleFetching();
 
   // Deletes all currently stored snippets.
   void ClearSnippets();
 
   // Discards the snippet with the given |url|, if it exists. Returns true iff
   // a snippet was discarded.
   bool DiscardSnippet(const GURL& url);
 
-  // Returns the lists of snippets previously discarded by the user (that are
+  // Returns the list of current valid snippets.
+  const NTPSnippetStorage& snippets() const {
+    return snippets_;
+  }
+
+  // Returns the list of snippets previously discarded by the user (that are
   // not expired yet).
   const NTPSnippetStorage& discarded_snippets() const {
     return discarded_snippets_;
   }
 
   // Clears the lists of snippets previously discarded by the user.
   void ClearDiscardedSnippets();
 
   // Returns the lists of suggestion hosts the snippets are restricted to.
   std::set<std::string> GetSuggestionsHosts() const;
 
+  // Returns the given snippets as a list value.
+  scoped_ptr<base::ListValue> SnippetsToListValue(
+      const NTPSnippetsService::NTPSnippetStorage& snippets) const;
+
   // Observer accessors.
   void AddObserver(NTPSnippetsServiceObserver* observer);
   void RemoveObserver(NTPSnippetsServiceObserver* observer);
 
   // Number of snippets available.
   size_t size() const { return snippets_.size(); }
 
   // The snippets can be iterated upon only via a const_iterator. Recommended
   // way to iterate is as follows:
   //
@@ skipping 91 matching lines @@
   // Sent when the service is shutting down.
   virtual void NTPSnippetsServiceShutdown() = 0;
 
  protected:
   virtual ~NTPSnippetsServiceObserver() {}
 };
 
 }  // namespace ntp_snippets
 
 #endif  // COMPONENTS_NTP_SNIPPETS_NTP_SNIPPETS_SERVICE_H_