Establish mojo service between Canvas (blink) and SurfaceManager (browser)

third_party/WebKit/public/platform/modules/offscreencanvas/offscreen_canvas_surface_service.mojom

Index: third_party/WebKit/public/platform/modules/offscreencanvas/offscreen_canvas_surface_service.mojom
diff --git a/third_party/WebKit/public/platform/modules/offscreencanvas/offscreen_canvas_surface_service.mojom b/third_party/WebKit/public/platform/modules/offscreencanvas/offscreen_canvas_surface_service.mojom
new file mode 100644
index 0000000000000000000000000000000000000000..69834110e05c9be3edd89c211fb4c6e5e8b557d7
--- /dev/null
+++ b/third_party/WebKit/public/platform/modules/offscreencanvas/offscreen_canvas_surface_service.mojom
@@ -0,0 +1,23 @@
+// 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.
+
+module blink.mojom;
+
+import "cc/ipc/surface_id.mojom";
+import "cc/ipc/surface_sequence.mojom";
+
+interface OffscreenCanvasSurfaceService {

[Ben Goodger (Google), 2016/06/17 00:38:33]

Are you using the -Service suffix because this is logically a service, or just
because other Mojo interfaces do it?

I'd like to deprecate suffixing all interfaces with the term "Service" unless
there really is no better name. In this case, does "OffscreenCanvasSurface" make
sense?

+
+  // TODO(619138): Make creation of surface id Async after implementation
+  // change on surface_id generator that makes client side be able to generate
+  // unique surface_id.id_namespace alone.
+  [ Sync ]
+  GetSurfaceId() => (cc.mojom.SurfaceId surface_id);
+  RequestSurfaceCreation(cc.mojom.SurfaceId surface_id);
+
+  Require(cc.mojom.SurfaceId surface_id, cc.mojom.SurfaceSequence sequence);
+  Satisfy(cc.mojom.SurfaceSequence sequence);
+};
+
+