Remove InlineLoginHandlerChromeOS and exclude InlineLoginUI from CrOS build.

chrome/test/BUILD.gn

Index: chrome/test/BUILD.gn
diff --git a/chrome/test/BUILD.gn b/chrome/test/BUILD.gn
index 60fbe7dfbc49761cb4b9a50aad283764d6e94f03..fac6bca275cf520cd836ae7e48b1e3247854c7a5 100644
--- a/chrome/test/BUILD.gn
+++ b/chrome/test/BUILD.gn
@@ -1030,6 +1030,9 @@ if (!is_android) {
         # chromeos does not use cross-platform panels
         "../browser/ui/panels/panel_extension_browsertest.cc",
 
+        # inline login UI is disabled on chromeos
+        "../browser/ui/webui/signin/inline_login_ui_browsertest.cc",
+
         # chromeos does not use the desktop user manager
         "../browser/ui/webui/signin/user_manager_ui_browsertest.cc",
       ]