Disable cookies when fetching favicon.

webkit/glue/resource_fetcher.cc

Index: webkit/glue/resource_fetcher.cc
diff --git a/webkit/glue/resource_fetcher.cc b/webkit/glue/resource_fetcher.cc
index c3d7c84eca2be4f1e9605b87c0353b2d1d88bd41..8729aa74369316e95213b791dae7ae4f5e909f7b 100644
--- a/webkit/glue/resource_fetcher.cc
+++ b/webkit/glue/resource_fetcher.cc
@@ -51,6 +51,10 @@ void ResourceFetcher::Cancel() {
 void ResourceFetcher::Start(WebFrame* frame) {
   WebURLRequest request(url_);
   request.setTargetType(target_type_);
+  if (target_type_ == WebURLRequest::TargetIsFavicon) {
+    // Disable cookies to avoid side effects when fetching favicon.
+    request.setAllowCookies(false);
+  }
   request.setFirstPartyForCookies(frame->document().firstPartyForCookies());
   frame->dispatchWillSendRequest(request);