Sync the browser test host resolver with the network process before a test runs.

content/shell/utility/shell_content_utility_client.h

Index: content/shell/utility/shell_content_utility_client.h
diff --git a/content/shell/utility/shell_content_utility_client.h b/content/shell/utility/shell_content_utility_client.h
index 3ab2f82bc7af9a185ce001c25d1bd637e7a8ef07..afb566ae6611b23f3c1eb7ca13f44e82eecb0a46 100644
--- a/content/shell/utility/shell_content_utility_client.h
+++ b/content/shell/utility/shell_content_utility_client.h
@@ -5,17 +5,29 @@
 #ifndef CONTENT_SHELL_UTILITY_SHELL_CONTENT_UTILITY_CLIENT_H_
 #define CONTENT_SHELL_UTILITY_SHELL_CONTENT_UTILITY_CLIENT_H_
 
+#include "base/macros.h"
+#include "content/public/common/network_service_test.mojom.h"
 #include "content/public/utility/content_utility_client.h"
 
 namespace content {
 
 class ShellContentUtilityClient : public ContentUtilityClient {
  public:
+  ShellContentUtilityClient();
   ~ShellContentUtilityClient() override;
 
   // ContentUtilityClient:
   void UtilityThreadStarted() override;
   void RegisterServices(StaticServiceMap* services) override;
+  void RegisterNetworkBinders(
+      service_manager::BinderRegistry* registry) override;
+
+ private:
+  void Create(mojom::NetworkServiceTestRequest request);
+
+  std::unique_ptr<mojom::NetworkServiceTest> network_service_test_;
+
+  DISALLOW_COPY_AND_ASSIGN(ShellContentUtilityClient);
 };
 
 }  // namespace content