Implemented StructTraits for cc::CopyOutputRequest

cc/ipc/copy_output_request.mojom

Index: cc/ipc/copy_output_request.mojom
diff --git a/cc/ipc/copy_output_request.mojom b/cc/ipc/copy_output_request.mojom
new file mode 100644
index 0000000000000000000000000000000000000000..a090fdf3a3bb5525af072f3e5d2aa07cbd20a3c1
--- /dev/null
+++ b/cc/ipc/copy_output_request.mojom
@@ -0,0 +1,17 @@
+// Copyright 2017 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.
+
+module cc.mojom;
+
+import "cc/ipc/texture_mailbox.mojom";
+import "ui/gfx/geometry/mojo/geometry.mojom";
+
+// TODO(samans): Add source.

[enne (OOO), 2017/01/31 18:24:47]

In general, I was expecting some sort of id here so that the recipient of the
response could know which request it went with, but I that's something that can
happen later.

+// See cc/output/copy_output_request.h.
+// Note: result_callback_ is not included in this struct.
+struct CopyOutputRequest {
+  bool force_bitmap_result;
+  gfx.mojom.Rect? area;
+  cc.mojom.TextureMailbox? texture_mailbox;
+};