Respect cookies set in a 401 responses when restarting the http transaction....

net/http/http_cache.cc

Index: net/http/http_cache.cc
===================================================================
--- net/http/http_cache.cc	(revision 12402)
+++ net/http/http_cache.cc	(working copy)
@@ -166,6 +166,7 @@
   virtual int RestartWithAuth(const std::wstring& username,
                               const std::wstring& password,
                               CompletionCallback* callback);
+  virtual bool IsReadyToRestartForAuth();
   virtual int Read(IOBuffer* buf, int buf_len, CompletionCallback*);
   virtual const HttpResponseInfo* GetResponseInfo() const;
   virtual LoadState GetLoadState() const;
@@ -402,6 +403,12 @@
   return rv;
 }
 
+bool HttpCache::Transaction::IsReadyToRestartForAuth() {
+  if (!network_trans_.get())
+    return false;
+  return network_trans_->IsReadyToRestartForAuth();
+}
+
 int HttpCache::Transaction::Read(IOBuffer* buf, int buf_len,
                                  CompletionCallback* callback) {
   DCHECK(buf);