Implement gfx::Transform StructTraits

mojo/public/tools/bindings/mojom.gni

Index: mojo/public/tools/bindings/mojom.gni
diff --git a/mojo/public/tools/bindings/mojom.gni b/mojo/public/tools/bindings/mojom.gni
index 5449727e6e4e1048fc4fc664ddba42c13df5dde0..dcb3a9360b5b6b76a42225c78b567c22f3566858 100644
--- a/mojo/public/tools/bindings/mojom.gni
+++ b/mojo/public/tools/bindings/mojom.gni
@@ -326,7 +326,7 @@ template("mojom") {
         # //mojo/something:something and we can append cpp_sources_suffix to
         # get the cpp dependency name.
         full_name = get_label_info("$d", "label_no_toolchain")
-        deps += [ "${full_name}${variant_suffix}_${cpp_sources_suffix}" ]
+        public_deps += [ "${full_name}${variant_suffix}_${cpp_sources_suffix}" ]
       }
       foreach(typemap, active_typemaps) {
         if (defined(typemap.public_headers)) {
@@ -338,6 +338,9 @@ template("mojom") {
         if (defined(typemap.sources)) {
           sources += typemap.sources
         }
+        if (defined(typemap.public_deps)) {
+          public_deps += typemap.public_deps
+        }
         if (defined(typemap.deps)) {
           deps += typemap.deps
         }