Mojo bindings: Fix typemap includes.

mojo/public/interfaces/bindings/tests/blink_test.typemap

Index: mojo/public/interfaces/bindings/tests/blink_test.typemap
diff --git a/mojo/public/interfaces/bindings/tests/blink_test.typemap b/mojo/public/interfaces/bindings/tests/blink_test.typemap
index 5425ee1c6fbdfaee677803846b21ebba79347e03..94a7d68f71bc4f616ae5a07fbc8ccbf17ee54d51 100644
--- a/mojo/public/interfaces/bindings/tests/blink_test.typemap
+++ b/mojo/public/interfaces/bindings/tests/blink_test.typemap
@@ -6,15 +6,18 @@
   "c++": {
     "mojo.test.PickledStruct": {
       "typename": "mojo::test::PickledStructBlink",
-      "headers": [
+      "public_headers": [
         "mojo/public/cpp/bindings/tests/pickled_struct_blink.h"
       ]
+    },
+    "mojo.test.TypemappedRect": {
+      "typename": "mojo::test::RectBlink",
+      "public_headers": [
+        "mojo/public/cpp/bindings/tests/rect_blink.h"
+      ],
+      "traits_headers": [
+        "mojo/public/cpp/bindings/tests/rect_blink_traits.h"
+      ]
     }
-//  "mojo.test.Rect": {
-//    "typename": "mojo::test::RectBlink",
-//    "headers": [
-//      "mojo/public/cpp/bindings/tests/rect_blink.h"
-//    ]
-//  }
   }
 }