Implement Web Restrictions in WebView.

android_webview/BUILD.gn

Index: android_webview/BUILD.gn
diff --git a/android_webview/BUILD.gn b/android_webview/BUILD.gn
index 6670def09f3d0fdca3e87c0ed5315fb6b8cde05d..5031354e1228db73815d24c8597ea2eecbbf5746 100644
--- a/android_webview/BUILD.gn
+++ b/android_webview/BUILD.gn
@@ -102,14 +102,17 @@ repack("repack_pack") {
   sources = [
     "$root_gen_dir/blink/public/resources/blink_image_resources_100_percent.pak",
     "$root_gen_dir/blink/public/resources/blink_resources.pak",
+    "$root_gen_dir/components/components_resources.pak",
     "$root_gen_dir/content/app/resources/content_resources_100_percent.pak",
     "$root_gen_dir/content/content_resources.pak",
     "$root_gen_dir/net/net_resources.pak",
     "$root_gen_dir/ui/resources/ui_resources_100_percent.pak",
+    "$root_gen_dir/ui/resources/webui_resources.pak",
     "$target_gen_dir/aw_resources.pak",
   ]
   deps = [
     ":generate_aw_resources",
+    "//components/resources:components_resources",
     "//content:resources",
     "//content/app/resources",
     "//net:net_resources",
@@ -568,9 +571,12 @@ source_set("common") {
     "//components/printing/browser",
     "//components/printing/common",
     "//components/printing/renderer",
+    "//components/supervised_user_error_page",
+    "//components/supervised_user_error_page:gin",
     "//components/visitedlink/browser",
     "//components/visitedlink/renderer",
     "//components/web_contents_delegate_android:web_contents_delegate_android",
+    "//components/web_restrictions:browser",
     "//content",
     "//content/public/app:both",
     "//content/public/browser",
@@ -678,6 +684,7 @@ android_library("android_webview_java") {
     "//components/external_video_surface:java",
     "//components/navigation_interception/android:navigation_interception_java",
     "//components/web_contents_delegate_android:web_contents_delegate_android_java",
+    "//components/web_restrictions:web_restrictions_java",
     "//content/public/android:content_java",
     "//net/android:net_java",
     "//ui/android:ui_java",