[Autofill] Add typemap for autofill:FormFieldData and autofill::FormData.

components/autofill/content/public/interfaces/BUILD.gn

Index: components/autofill/content/public/interfaces/BUILD.gn
diff --git a/components/autofill/content/public/interfaces/BUILD.gn b/components/autofill/content/public/interfaces/BUILD.gn
index 15b0ae9be3b048e1dcac1bb89e4174aa93a9f802..3a77091da0d76a13a7f803820defaba59409a173 100644
--- a/components/autofill/content/public/interfaces/BUILD.gn
+++ b/components/autofill/content/public/interfaces/BUILD.gn
@@ -9,4 +9,28 @@ mojom("interfaces") {
     "autofill_agent.mojom",
     "autofill_driver.mojom",
   ]
+
+  public_deps = [
+    ":types",
+  ]
+}
+
+mojom("types") {
+  sources = [
+    "autofill_types.mojom",
+  ]
+
+  public_deps = [
+    "//url/mojo:url_mojom_gurl",
+  ]
+}
+
+mojom("test_types") {
+  sources = [
+    "test_autofill_types.mojom",
+  ]
+
+  public_deps = [
+    ":types",
+  ]
 }