net: fix multiple use-after-scope issues in net_unittests.

net/url_request/url_request_unittest.cc

Index: net/url_request/url_request_unittest.cc
diff --git a/net/url_request/url_request_unittest.cc b/net/url_request/url_request_unittest.cc
index e5c941f48b2c3098d04697f08b7446c4aa3f9126..580768775a67ecbb773be3bb7656c2a4b4ccee4e 100644
--- a/net/url_request/url_request_unittest.cc
+++ b/net/url_request/url_request_unittest.cc
@@ -5446,8 +5446,8 @@ TEST_F(URLRequestTestHTTP, URLRequestDelegateOnRedirectCancelled) {
   for (size_t test_case = 0; test_case < arraysize(kCancelStages);
        ++test_case) {
     AsyncLoggingUrlRequestDelegate request_delegate(kCancelStages[test_case]);
-    TestURLRequestContext context(true);
     TestNetLog net_log;
+    TestURLRequestContext context(true);
     context.set_network_delegate(NULL);
     context.set_net_log(&net_log);
     context.Init();