[Media Router WebUI] Set titles for buttons.

chrome/browser/ui/webui/media_router/media_router_localized_strings_provider.cc

Index: chrome/browser/ui/webui/media_router/media_router_localized_strings_provider.cc
diff --git a/chrome/browser/ui/webui/media_router/media_router_localized_strings_provider.cc b/chrome/browser/ui/webui/media_router/media_router_localized_strings_provider.cc
index dda409379d5ad1d17f5d7adb3ba92fea1ce360a6..66a54e7c02e97d447bb603fd25a67caa92e20c7f 100644
--- a/chrome/browser/ui/webui/media_router/media_router_localized_strings_provider.cc
+++ b/chrome/browser/ui/webui/media_router/media_router_localized_strings_provider.cc
@@ -17,6 +17,14 @@ void AddMediaRouterStrings(content::WebUIDataSource* html_source) {
   html_source->AddLocalizedString("mediaRouterTitle", IDS_MEDIA_ROUTER_TITLE);
   html_source->AddLocalizedString("learnMoreText",
                                   IDS_MEDIA_ROUTER_LEARN_MORE);
+  html_source->AddLocalizedString("backButtonTitle",
+                                  IDS_MEDIA_ROUTER_BACK_BUTTON_TITLE);
+  html_source->AddLocalizedString("closeButtonTitle",
+                                  IDS_MEDIA_ROUTER_CLOSE_BUTTON_TITLE);
+  html_source->AddLocalizedString("dropDownButtonTitle",
+                                  IDS_MEDIA_ROUTER_DROP_DOWN_BUTTON_TITLE);
+  html_source->AddLocalizedString("searchButtonTitle",
+                                  IDS_MEDIA_ROUTER_SEARCH_BUTTON_TITLE);
 }
 
 void AddRouteDetailsStrings(content::WebUIDataSource* html_source) {