Move the supervised user error page to a component

components/supervised_user_error_page.gypi

Index: components/supervised_user_error_page.gypi
diff --git a/components/supervised_user_error_page.gypi b/components/supervised_user_error_page.gypi
new file mode 100644
index 0000000000000000000000000000000000000000..a405aa973fbf8acf6b4174254f626a0718345ad1
--- /dev/null
+++ b/components/supervised_user_error_page.gypi
@@ -0,0 +1,22 @@
+{
+  'targets': [
+    {
+      # GN version: //components/supervused_user_error_page
+      'target_name': 'supervised_user_error_page',
+      'type': 'static_library',
+      'dependencies': [
+        'components_resources.gyp:components_resources',
+        'components_strings.gyp:components_strings',
+        '../base/base.gyp:base',
+        '../ui/base/ui_base.gyp:ui_base'
+      ],
+      'include_dirs': [
+        '..',
+      ],
+      'sources': [
+        'supervised_user_error_page/supervised_user_error_page.cc',
+        'supervised_user_error_page/supervised_user_error_page.h',
+      ],
+    },
+  ],
+}