Add an URLRequestTest to test the quic server info factory setup at the creation of HttpCache.

net/http/mock_http_cache.h

Index: net/http/mock_http_cache.h
diff --git a/net/http/mock_http_cache.h b/net/http/mock_http_cache.h
index ebf67fea129f8af43da9d92575196da8d10f0c5f..c6612c4ffbf933a612095a1206758e457adfcf6f 100644
--- a/net/http/mock_http_cache.h
+++ b/net/http/mock_http_cache.h
@@ -182,8 +182,7 @@ class MockHttpCache {
   MockHttpCache();
   explicit MockHttpCache(
       std::unique_ptr<HttpCache::BackendFactory> disk_cache_factory);
-  // |set_up_quic_server_info| if set, will set a quic server info factory
-  // adptor.
+  // |set_up_quic_server_info| if set, will set a quic server info factory.
   explicit MockHttpCache(bool set_up_quic_server_info);
 
   MockHttpCache(std::unique_ptr<HttpCache::BackendFactory> disk_cache_factory,