Initial implementation of WebUI generator (WUG) toolkit.

components/BUILD.gn

Index: components/BUILD.gn
diff --git a/components/BUILD.gn b/components/BUILD.gn
index 39548d7a90793f665b7789a40d9325fb5c0d6e35..e55196f90f2cd046d357560c32bb11755aaa925b 100644
--- a/components/BUILD.gn
+++ b/components/BUILD.gn
@@ -110,8 +110,9 @@ group("all_components") {
     "//components/web_cache/common",
     "//components/web_cache/renderer",
     "//components/web_modal",
-    "//components/webdata/common",
     "//components/web_resource",
+    "//components/webdata/common",
+    "//components/webui_generator",
     "//components/wifi",
     "//components/wifi_sync",
   ]
@@ -133,6 +134,7 @@ group("all_components") {
     deps -= [
       "//components/history/content/browser",
       "//components/keyed_service/content",
+      "//components/webui_generator",
     ]
   }