Add a new priority level, THROTTLED, below IDLE.

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 512e5cfa354149eca25b4f6c3bd76885e0838f33..9ccc3eeae01afe655fda501a3201391e84a3b8cd 100644
--- a/net/url_request/url_request_unittest.cc
+++ b/net/url_request/url_request_unittest.cc
@@ -7907,6 +7907,21 @@ TEST_F(URLRequestTestHTTP, NetworkAccessedClearOnLoadOnlyFromCache) {
   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());
+}
+
 class URLRequestInterceptorTestHTTP : public URLRequestTestHTTP {
  public:
   // TODO(bengr): Merge this with the URLRequestInterceptorHTTPTest fixture,