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

chrome/browser/ui/webui/fileicon_source.cc

Index: chrome/browser/ui/webui/fileicon_source.cc
diff --git a/chrome/browser/ui/webui/fileicon_source.cc b/chrome/browser/ui/webui/fileicon_source.cc
index ddb2fbee8251b705455ec3d2f297bb1faf02710a..c048f30a6c8d2e38ed7dfbb6fd8c76496f42990b 100644
--- a/chrome/browser/ui/webui/fileicon_source.cc
+++ b/chrome/browser/ui/webui/fileicon_source.cc
@@ -146,6 +146,10 @@ std::string FileIconSource::GetMimeType(const std::string&) const {
   return std::string();
 }
 
+bool FileIconSource::AllowCaching() const {
+  return false;
+}
+
 void FileIconSource::OnFileIconDataAvailable(const IconRequestDetails& details,
                                              gfx::Image* icon) {
   if (icon) {