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

chrome/browser/ui/webui/favicon_source.cc

Index: chrome/browser/ui/webui/favicon_source.cc
diff --git a/chrome/browser/ui/webui/favicon_source.cc b/chrome/browser/ui/webui/favicon_source.cc
index fa63fc31f74d0b8f4c90c4bfed11d4d55cb01c4b..fca040d2370a60ea08cf6587f1f834b86eb0ac20 100644
--- a/chrome/browser/ui/webui/favicon_source.cc
+++ b/chrome/browser/ui/webui/favicon_source.cc
@@ -132,6 +132,10 @@ std::string FaviconSource::GetMimeType(const std::string&) const {
   return "image/png";
 }
 
+bool FaviconSource::AllowCaching() const {
+  return false;
+}
+
 bool FaviconSource::ShouldReplaceExistingSource() const {
   // Leave the existing DataSource in place, otherwise we'll drop any pending
   // requests on the floor.