Use compositor_frame typemap in Blink

mojo/common/BUILD.gn

Index: mojo/common/BUILD.gn
diff --git a/mojo/common/BUILD.gn b/mojo/common/BUILD.gn
index 428ee1ef48d019717e14ab2ebbf2e53eaf27b303..c3a551d4095aa5a335e2570ed452143fe77f0f72 100644
--- a/mojo/common/BUILD.gn
+++ b/mojo/common/BUILD.gn
@@ -60,6 +60,7 @@ test("mojo_common_unittests") {
   deps = [
     ":common",
     ":common_custom_types",
+    ":struct_traits",
     ":test_common_custom_types",
     "//base",
     "//base:message_loop_tests",
@@ -88,3 +89,20 @@ test("mojo_common_perftests") {
     "//testing/gtest",
   ]
 }
+
+group("struct_traits") {
+  public_deps = [
+    ":struct_traits_sources",
+  ]
+}
+
+source_set("struct_traits_sources") {
+  sources = [
+    "common_custom_types_struct_traits.cc",
+    "common_custom_types_struct_traits.h",
+  ]
+  deps = [
+    ":common_custom_types_shared_cpp_sources",
+    "//base:base",
+  ]
+}