Use compositor_frame typemap in Blink

ui/gfx/geometry/mojo/BUILD.gn

 # Copyright 2016 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")
 
 # This target does NOT depend on skia. One can depend on this target to avoid
 # picking up a dependency on skia.
 mojom("mojo") {
   sources = [
@@ skipping 19 matching lines @@
   ]
 
   deps = [
     ":test_interfaces",
     "//base",
     "//mojo/public/cpp/bindings",
     "//testing/gtest",
     "//ui/gfx/geometry",
   ]
 }
+
+group("struct_traits") {
+  public_deps = [
+    ":struct_traits_sources",
+  ]
+}
+
+source_set("struct_traits_sources") {
+  sources = [
+    "geometry_struct_traits.h",
+  ]
+  public_deps = [
+    ":mojo_shared_cpp_sources",
+    "//ui/gfx/geometry",
+  ]
+}