fix a problem that android cannot download files with basic authentication

net/url_request/url_request_job.h

Index: net/url_request/url_request_job.h
diff --git a/net/url_request/url_request_job.h b/net/url_request/url_request_job.h
index ae956733ee700aae6e3759ee6b43b62c2e9adfbe..0a1c79fa8cbf759860f13ac7ec9734218cdc11db 100644
--- a/net/url_request/url_request_job.h
+++ b/net/url_request/url_request_job.h
@@ -157,6 +157,11 @@ class NET_EXPORT URLRequestJob : public base::RefCounted<URLRequestJob>,
   // obtaining the credentials passing them to SetAuth.
   virtual bool NeedsAuth();
 
+  // Determine whether the request has authentication credentials. This call
+  // will return true of SetAuth() is called without any subsequent CancelAuth()
+  // calls.
+  virtual bool HasAuth() const OVERRIDE;
+
   // Fills the authentication info with the server's response.
   virtual void GetAuthChallengeInfo(
       scoped_refptr<AuthChallengeInfo>* auth_info);