Add Satisfy() and Require() to MojoCompositorFrameSink

cc/ipc/mojo_compositor_frame_sink.mojom

Index: cc/ipc/mojo_compositor_frame_sink.mojom
diff --git a/cc/ipc/mojo_compositor_frame_sink.mojom b/cc/ipc/mojo_compositor_frame_sink.mojom
index 284a470fc6319434cedcb0da1640d530648d16d7..87ddd3aff8b26a93f5ec411d2ba0fab588686b62 100644
--- a/cc/ipc/mojo_compositor_frame_sink.mojom
+++ b/cc/ipc/mojo_compositor_frame_sink.mojom
@@ -10,6 +10,7 @@ import "cc/ipc/frame_sink_id.mojom";
 import "cc/ipc/local_frame_id.mojom";
 import "cc/ipc/surface_reference.mojom";
 import "cc/ipc/returned_resource.mojom";
+import "cc/ipc/surface_sequence.mojom";
 
 // A MojoCompositorFrameSink is an interface for receiving CompositorFrame
 // structs. A CompositorFrame contains the complete output meant for display.
@@ -42,6 +43,16 @@ interface MojoCompositorFrameSink {
   // that its resources gets returned in time.
   EvictFrame();
 
+  // TODO(staraz): Delete Require() and Satisfy() once surface references
+  // (CL 2541683004) are ready.
+  // Add the provided |sequence| as a destruction dependency of the
+  // surface associated with the provided |local_frame_id|.
+  Require(cc.mojom.LocalFrameId local_frame_id,
+          cc.mojom.SurfaceSequence sequence);
+
+  // Mark the sequence as satisfied and garbage collect surfaces.
+  Satisfy(cc.mojom.SurfaceSequence sequence);
+
   // TODO(fsamuel): ReadbackBitmap API would be useful here.
 };