Set a proper first-party URL when fetching resources via ResourceFetcher

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 f0c8771739907ce4f38bda565ee833f98b21b9ca..ac8882497d683dd6cf2c16b632bbca44bb38435b 100644
--- a/webkit/glue/resource_fetcher.cc
+++ b/webkit/glue/resource_fetcher.cc
@@ -5,6 +5,7 @@
 #include "webkit/glue/resource_fetcher.h"
 
 #include "base/logging.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebDocument.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebKit.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebKitPlatformSupport.h"
@@ -50,6 +51,7 @@ void ResourceFetcher::Cancel() {
 void ResourceFetcher::Start(WebFrame* frame) {
   WebURLRequest request(url_);
   request.setTargetType(target_type_);
+  request.setFirstPartyForCookies(frame->document().firstPartyForCookies());
   frame->dispatchWillSendRequest(request);
 
   loader_.reset(WebKit::webKitPlatformSupport()->createURLLoader());