Mojom structs for copy requests / results should map to unique_ptr

cc/ipc/copy_output_result_struct_traits.h

Index: cc/ipc/copy_output_result_struct_traits.h
diff --git a/cc/ipc/copy_output_result_struct_traits.h b/cc/ipc/copy_output_result_struct_traits.h
index e52dcfbfd21c94057fe5d55b267f316c7f6cb8ee..727ac7c67136f7520bdc3f26ddd0ce915c0ae34d 100644
--- a/cc/ipc/copy_output_result_struct_traits.h
+++ b/cc/ipc/copy_output_result_struct_traits.h
@@ -14,20 +14,23 @@
 namespace mojo {
 
 template <>
-struct StructTraits<cc::mojom::CopyOutputResultDataView, cc::CopyOutputResult> {
-  static const gfx::Size& size(const cc::CopyOutputResult& result) {
-    return result.size_;
+struct StructTraits<cc::mojom::CopyOutputResultDataView,
+                    std::unique_ptr<cc::CopyOutputResult>> {
+  static const gfx::Size& size(
+      const std::unique_ptr<cc::CopyOutputResult>& result) {
+    return result->size_;
   }
 
-  static const SkBitmap& bitmap(const cc::CopyOutputResult& result);
+  static const SkBitmap& bitmap(
+      const std::unique_ptr<cc::CopyOutputResult>& result);
 
   static const cc::TextureMailbox& texture_mailbox(
-      const cc::CopyOutputResult& result) {
-    return result.texture_mailbox_;
+      const std::unique_ptr<cc::CopyOutputResult>& result) {
+    return result->texture_mailbox_;
   }
 
   static bool Read(cc::mojom::CopyOutputResultDataView data,
-                   cc::CopyOutputResult* out);
+                   std::unique_ptr<cc::CopyOutputResult>* out_p);
 };
 
 }  // namespace mojo