Use compositor_frame typemap in Blink

mojo/common/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//testing/test.gni")
 
 group("common") {
   public_deps = [
     ":common_base",
@@ skipping 42 matching lines @@
   public_deps = [
     ":common_custom_types",
   ]
 }
 
 # GYP version: mojo/mojo_base.gyp:mojo_common_unittests
 test("mojo_common_unittests") {
   deps = [
     ":common",
     ":common_custom_types",
+    ":struct_traits",
     ":test_common_custom_types",
     "//base",
     "//base:message_loop_tests",
     "//base/test:test_support",
     "//mojo/edk/test:run_all_unittests",
     "//mojo/edk/test:test_support",
     "//mojo/public/cpp/bindings",
     "//mojo/public/cpp/test_support:test_utils",
     "//testing/gtest",
     "//url",
   ]
 
   sources = [
     "common_custom_types_unittest.cc",
     "common_type_converters_unittest.cc",
     "struct_traits_unittest.cc",
   ]
 }
 
 test("mojo_common_perftests") {
   deps = [
     ":common",
     "//base",
     "//mojo/edk/test:run_all_perftests",
     "//mojo/public/cpp/test_support:test_utils",
     "//testing/gtest",
   ]
 }
+
+source_set("struct_traits") {
+  sources = [
+    "common_custom_types_struct_traits.cc",
+    "common_custom_types_struct_traits.h",
+  ]
+  deps = [
+    ":common_custom_types_shared_cpp_sources",
+    "//base:base",
+  ]
+}