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

components/ntp_snippets/ntp_snippets_service.h

Index: components/ntp_snippets/ntp_snippets_service.h
diff --git a/components/ntp_snippets/ntp_snippets_service.h b/components/ntp_snippets/ntp_snippets_service.h
index c7a32443301e976c088ec1dc7dbb7945e3267879..3a32b89af7474edca8672cfa49ef96bf9ede0d1d 100644
--- a/components/ntp_snippets/ntp_snippets_service.h
+++ b/components/ntp_snippets/ntp_snippets_service.h
@@ -90,7 +90,12 @@ class NTPSnippetsService : public KeyedService {
   // 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_;
@@ -102,6 +107,10 @@ class NTPSnippetsService : public KeyedService {
   // 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);