Faster Reload: Specify AllowCaching = false for some URLDataSources that need it

chrome/browser/ui/webui/large_icon_source.cc

Index: chrome/browser/ui/webui/large_icon_source.cc
diff --git a/chrome/browser/ui/webui/large_icon_source.cc b/chrome/browser/ui/webui/large_icon_source.cc
index b8fc09fb58f1f3b5938cb4deeab0355a5251845f..2924ec26f99adad8c9067875f3ca09165ade3899 100644
--- a/chrome/browser/ui/webui/large_icon_source.cc
+++ b/chrome/browser/ui/webui/large_icon_source.cc
@@ -79,6 +79,10 @@ std::string LargeIconSource::GetMimeType(const std::string&) const {
   return "image/png";
 }
 
+bool LargeIconSource::AllowCaching() const {
+  return false;
+}
+
 bool LargeIconSource::ShouldReplaceExistingSource() const {
   // Leave the existing DataSource in place, otherwise we'll drop any pending
   // requests on the floor.