Use base::string16 for user-visible texts in ContentSuggestion

components/ntp_snippets/offline_pages/offline_page_suggestions_provider.cc

Index: components/ntp_snippets/offline_pages/offline_page_suggestions_provider.cc
diff --git a/components/ntp_snippets/offline_pages/offline_page_suggestions_provider.cc b/components/ntp_snippets/offline_pages/offline_page_suggestions_provider.cc
index 2cc197268d71c0297a2ae0743e65fef4d84b5d1d..eec605b00b188d6e1d32d9c7ec1f12e34821759a 100644
--- a/components/ntp_snippets/offline_pages/offline_page_suggestions_provider.cc
+++ b/components/ntp_snippets/offline_pages/offline_page_suggestions_provider.cc
@@ -6,6 +6,7 @@
 
 #include "base/bind.h"
 #include "base/strings/string_number_conversions.h"
+#include "base/strings/utf_string_conversions.h"
 
 using offline_pages::MultipleOfflinePageItemResult;
 using offline_pages::OfflinePageModel;
@@ -119,10 +120,10 @@ void OfflinePageSuggestionsProvider::OnOfflinePagesLoaded(
     // TODO(pke): Sort my most recently visited and only keep the top one of
     // multiple entries for the same URL.
     // TODO(pke): Get more reasonable data from the OfflinePageModel here.
-    suggestion.set_title(item.url.spec());
-    suggestion.set_snippet_text(std::string());
+    suggestion.set_title(base::UTF8ToUTF16(item.url.spec()));
+    suggestion.set_snippet_text(base::string16());
     suggestion.set_publish_date(item.creation_time);
-    suggestion.set_publisher_name(item.url.host());
+    suggestion.set_publisher_name(base::UTF8ToUTF16(item.url.host()));
     suggestions.emplace_back(std::move(suggestion));
     if (suggestions.size() == kMaxSuggestionsCount)
       break;