Add a new priority level, THROTTLED, below IDLE.

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 7789 matching lines @@
   std::unique_ptr<URLRequest> req(
       default_context_.CreateRequest(test_url, DEFAULT_PRIORITY, &d));
   req->SetLoadFlags(LOAD_ONLY_FROM_CACHE);
 
   req->Start();
   base::RunLoop().Run();
 
   EXPECT_FALSE(req->response_info().network_accessed);
 }
 
+// Test that a single job with a throttled priority completes
+// correctly in the absence of contention.
+TEST_F(URLRequestTestHTTP, ThrottledPriority) {
+  ASSERT_TRUE(http_test_server()->Start());
+
+  TestDelegate d;
+  GURL test_url(http_test_server()->GetURL("/"));
+  std::unique_ptr<URLRequest> req(
+      default_context_.CreateRequest(test_url, THROTTLED, &d));
+  req->Start();
+  base::RunLoop().Run();
+
+  EXPECT_TRUE(req->status().is_success());
+}
+
 TEST_F(URLRequestTestHTTP, RawBodyBytesNoContentEncoding) {
   ASSERT_TRUE(http_test_server()->Start());
 
   TestDelegate d;
   std::unique_ptr<URLRequest> req(default_context().CreateRequest(
       http_test_server()->GetURL("/simple.html"), DEFAULT_PRIORITY, &d));
   req->Start();
   base::RunLoop().Run();
 
   EXPECT_EQ(5, req->GetRawBodyBytes());
@@ skipping 2398 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