Implement Web Restrictions in WebView.

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
index a405aa973fbf8acf6b4174254f626a0718345ad1..b6f00051f4bd9705d43e3eeae9d6a20c808cc37e 100644
--- a/components/supervised_user_error_page.gypi
+++ b/components/supervised_user_error_page.gypi
@@ -1,7 +1,7 @@
 {
   'targets': [
     {
-      # GN version: //components/supervused_user_error_page
+      # GN version: //components/supervised_user_error_page
       'target_name': 'supervised_user_error_page',
       'type': 'static_library',
       'dependencies': [
@@ -19,4 +19,23 @@
       ],
     },
   ],
+  'conditions': [
+    ['OS == "android"', {
+      'targets': [
+        {
+          # GN version: //components/supervised_user_error_page:gin
+          'target_name': 'supervised_user_error_page_gin',
+          'type': 'static_library',
+          'dependencies': [
+            'components.gyp:web_restrictions_interfaces',
+            '../content/content.gyp:content_renderer',
+          ],
+          'sources': [
+            'supervised_user_error_page/supervised_user_gin_wrapper.cc',
+            'supervised_user_error_page/supervised_user_gin_wrapper.h',
+          ],
+        }
+      ],
+    }],
+  ],
 }