Mandoline: Allow submitting CompositorFrames directly to mojo::Views

components/view_manager/public/interfaces/compositor_frame.mojom

+// Copyright 2015 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 mojo;
+
+import "ui/mojo/geometry/geometry.mojom";
+import "components/view_manager/public/interfaces/quads.mojom";
+
+enum ResourceFormat {
+  RGBA_8888,
+  RGBA_4444,
+  BGRA_8888,
+  ALPHA_8,
+  LUMINANCE_8,
+  RGB_565,
+  ETC1,
+};
+
+struct Mailbox {
+  array<int8, 64> name;
+};
+
+struct MailboxHolder {
+  Mailbox mailbox;
+  uint32 texture_target;
+  uint32 sync_point;
+};
+
+struct TransferableResource {
+  uint32 id;
+  ResourceFormat format;
+  uint32 filter;
+  Size size;
+  MailboxHolder mailbox_holder;
+  bool is_repeated;
+  bool is_software;
+};
+
+struct CompositorFrame {
+  array<TransferableResource> resources;
+  array<Pass> passes;
+};
+
+// CompositorFrameReceiver is an interface for receiving CompositorFrame
+// structs. This is a separate interface to allow CompositorFrames to be
+// delivered from supplementary (not main) threads of a mojo app.
+interface CompositorFrameReceiver {
+  // After the submitted frame is drawn for the first time, the receiver will
+  // respond to the SubmitFrame message. Clients should use this acknowledgement
+  // to ratelimit frame submissions.
+  SubmitCompositorFrame(CompositorFrame frame) => ();
+};