[Icons NTP] Add chrome://large-icon host, which resizes icon and renders fallback.

chrome/browser/ui/webui/ntp/most_visited_handler.cc

Index: chrome/browser/ui/webui/ntp/most_visited_handler.cc
diff --git a/chrome/browser/ui/webui/ntp/most_visited_handler.cc b/chrome/browser/ui/webui/ntp/most_visited_handler.cc
index 39a1f2fb5c85c239559cf13fcd4d04a4700fe738..6b746ebfd177ae7963f5c12d7e1948e4bd381247 100644
--- a/chrome/browser/ui/webui/ntp/most_visited_handler.cc
+++ b/chrome/browser/ui/webui/ntp/most_visited_handler.cc
@@ -29,6 +29,7 @@
 #include "chrome/browser/ui/tabs/tab_strip_model_utils.h"
 #include "chrome/browser/ui/webui/fallback_icon_source.h"
 #include "chrome/browser/ui/webui/favicon_source.h"
+#include "chrome/browser/ui/webui/large_icon_source.h"
 #include "chrome/browser/ui/webui/ntp/new_tab_ui.h"
 #include "chrome/browser/ui/webui/ntp/ntp_stats.h"
 #include "chrome/browser/ui/webui/ntp/thumbnail_source.h"
@@ -80,6 +81,9 @@ void MostVisitedHandler::RegisterMessages() {
   // Set up our sources for top-sites data.
   content::URLDataSource::Add(profile, new ThumbnailListSource(profile));
 
+  // Register chrome://large-icon as a data source for large icons.
+  content::URLDataSource::Add(profile, new LargeIconSource(profile));
+
   // Register chrome://fallback-icon as a data source for fallback icons.
   content::URLDataSource::Add(profile, new FallbackIconSource());