Stop using CertStore which is not compatible with PlzNavigate.

content/browser/loader/async_resource_handler_unittest.cc

Index: content/browser/loader/async_resource_handler_unittest.cc
diff --git a/content/browser/loader/async_resource_handler_unittest.cc b/content/browser/loader/async_resource_handler_unittest.cc
index 19e353a67c05d760ccace627deeb5c9c40ddeeaa..8daf11238e217ac3c4cff317685a6209f9a48026 100644
--- a/content/browser/loader/async_resource_handler_unittest.cc
+++ b/content/browser/loader/async_resource_handler_unittest.cc
@@ -193,7 +193,7 @@ class AsyncResourceHandlerTest : public ::testing::Test,
     std::unique_ptr<AsyncResourceHandler> handler =
         base::MakeUnique<AsyncResourceHandler>(request.get(), &rdh_);
     loader_ = base::MakeUnique<ResourceLoader>(
-        std::move(request), std::move(handler), nullptr, this);
+        std::move(request), std::move(handler), this);
   }
 
   void StartRequestAndWaitWithResponseDataSize(size_t response_data_size) {