Wires up view manager to an actual display

mojo/services/public/interfaces/view_manager/view_manager.mojom

Index: mojo/services/public/interfaces/view_manager/view_manager.mojom
diff --git a/mojo/services/public/interfaces/view_manager/view_manager.mojom b/mojo/services/public/interfaces/view_manager/view_manager.mojom
index 173fa3190b90667fcebf3d63d913bd37d0ce2ea7..1636a6a4c3fea6ed0c650c4752fa8cbb08ae18b0 100644
--- a/mojo/services/public/interfaces/view_manager/view_manager.mojom
+++ b/mojo/services/public/interfaces/view_manager/view_manager.mojom
@@ -53,6 +53,11 @@ interface IViewManager {
 
   // Sets the view a node is showing.
   SetView(uint32 node_id, uint32 view_id, uint32 change_id) => (bool success);
+
+  // Shows the specified image (png encoded) in the specified view.
+  SetViewContents(uint32 view_id,
+                  handle<shared_buffer> buffer,
+                  uint32 buffer_size);
 };
 
 [Peer=IViewManager]