gfx: Struct traits for GpuMemoryBufferHandle.

ui/gfx/mojo/buffer_types.typemap

Index: ui/gfx/mojo/buffer_types.typemap
diff --git a/ui/gfx/mojo/buffer_types.typemap b/ui/gfx/mojo/buffer_types.typemap
index 514e9c529c030c80b40e1349b1e6055f6cb37faa..d35745863298e53465c680346d1d5a069c2d6f22 100644
--- a/ui/gfx/mojo/buffer_types.typemap
+++ b/ui/gfx/mojo/buffer_types.typemap
@@ -6,14 +6,21 @@ mojom = "//ui/gfx/mojo/buffer_types.mojom"
 public_headers = [
   "//ui/gfx/buffer_types.h",
   "//ui/gfx/gpu_memory_buffer.h",
+  "//ui/gfx/native_pixmap_handle.h",
 ]
 traits_headers = [ "//ui/gfx/mojo/buffer_types_traits.h" ]
+sources = [
+  "//ui/gfx/mojo/buffer_types_traits.cc",
+]
 public_deps = [
   "//ui/gfx",
 ]
 type_mappings = [
   "gfx.mojom.BufferFormat=gfx::BufferFormat",
   "gfx.mojom.BufferUsage=gfx::BufferUsage",
+  "gfx.mojom.GpuMemoryBufferHandle=gfx::GpuMemoryBufferHandle",
   "gfx.mojom.GpuMemoryBufferId=gfx::GpuMemoryBufferId[copyable_pass_by_value]",
   "gfx.mojom.GpuMemoryBufferType=gfx::GpuMemoryBufferType",
+  "gfx.mojom.NativePixmapHandle=gfx::NativePixmapHandle",
+  "gfx.mojom.NativePixmapPlane=gfx::NativePixmapPlane",
 ]