More consistency in m_v_s_bridge.cc.

chrome/browser/android/ntp/most_visited_sites_bridge.cc

Index: chrome/browser/android/ntp/most_visited_sites_bridge.cc
diff --git a/chrome/browser/android/ntp/most_visited_sites_bridge.cc b/chrome/browser/android/ntp/most_visited_sites_bridge.cc
index 19cc7b3aace9b61be8f2babc55b8b8fa9261db2d..44b5a62f8f69c1e797e39cbfc366fbeeda36d855 100644
--- a/chrome/browser/android/ntp/most_visited_sites_bridge.cc
+++ b/chrome/browser/android/ntp/most_visited_sites_bridge.cc
@@ -69,10 +69,11 @@ void MostVisitedSitesBridge::Observer::OnMostVisitedURLsAvailable(
   std::vector<std::string> whitelist_icon_paths;
   titles.reserve(suggestions.size());
   urls.reserve(suggestions.size());
+  whitelist_icon_paths.reserve(suggestions.size());
   for (const auto& suggestion : suggestions) {
-    titles.push_back(suggestion.title);
-    urls.push_back(suggestion.url.spec());
-    whitelist_icon_paths.push_back(suggestion.whitelist_icon_path.value());
+    titles.emplace_back(suggestion.title);
+    urls.emplace_back(suggestion.url.spec());
+    whitelist_icon_paths.emplace_back(suggestion.whitelist_icon_path.value());
   }
   Java_MostVisitedURLsObserver_onMostVisitedURLsAvailable(
       env, observer_.obj(), ToJavaArrayOfStrings(env, titles).obj(),