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

net/url_request/url_request_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <memory>
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 #include "base/run_loop.h"
 #include "build/build_config.h"
@@ skipping 5428 matching lines @@
 
   const AsyncLoggingUrlRequestDelegate::CancelStage kCancelStages[] = {
     AsyncLoggingUrlRequestDelegate::CANCEL_ON_RECEIVED_REDIRECT,
     AsyncLoggingUrlRequestDelegate::CANCEL_ON_RESPONSE_STARTED,
     AsyncLoggingUrlRequestDelegate::CANCEL_ON_READ_COMPLETED,
   };
 
   for (size_t test_case = 0; test_case < arraysize(kCancelStages);
        ++test_case) {
     AsyncLoggingUrlRequestDelegate request_delegate(kCancelStages[test_case]);
+    TestNetLog net_log;
     TestURLRequestContext context(true);
-    TestNetLog net_log;
     context.set_network_delegate(NULL);
     context.set_net_log(&net_log);
     context.Init();
 
     {
       std::unique_ptr<URLRequest> r(context.CreateRequest(
           http_test_server()->GetURL("/server-redirect?simple.html"),
           DEFAULT_PRIORITY, &request_delegate));
       LoadStateWithParam load_state = r->GetLoadState();
       r->Start();
@@ skipping 5291 matching lines @@
   AddTestInterceptor()->set_main_intercept_job(std::move(job));
 
   req->Start();
   req->Cancel();
   base::RunLoop().RunUntilIdle();
   EXPECT_EQ(ERR_ABORTED, d.request_status());
   EXPECT_EQ(0, d.received_redirect_count());
 }
 
 }  // namespace net