[DevTools] Warn that the error is expected

content/browser/devtools/devtools_http_handler_unittest.cc

Index: content/browser/devtools/devtools_http_handler_unittest.cc
diff --git a/content/browser/devtools/devtools_http_handler_unittest.cc b/content/browser/devtools/devtools_http_handler_unittest.cc
index db400720f253a1ff1a51d462cabb4e14e3dcd33b..a4ad827e9fa537f99fdfaf91a605c3c96e9d431e 100644
--- a/content/browser/devtools/devtools_http_handler_unittest.cc
+++ b/content/browser/devtools/devtools_http_handler_unittest.cc
@@ -151,6 +151,7 @@ TEST_F(DevToolsHttpHandlerTest, TestServerSocketFailed) {
   std::unique_ptr<DevToolsSocketFactory> factory(
       new FailingServerSocketFactory(run_loop.QuitClosure(),
                                      run_loop_2.QuitClosure()));
+  LOG(INFO) << "Following error message is expected:";
   DevToolsAgentHost::StartRemoteDebuggingServer(
       std::move(factory), std::string(), base::FilePath(), base::FilePath(),
       std::string(), std::string());