Add EmbedRoot to ViewManagerService.

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 5edd9cee24893febf080314fce57ad195253be96..d7b4cdb1cde5379b17c5dd7e25e78f0a7d2f5ff9 100644
--- a/mojo/services/public/interfaces/view_manager/view_manager.mojom
+++ b/mojo/services/public/interfaces/view_manager/view_manager.mojom
@@ -137,6 +137,11 @@ interface ViewManagerService {
   // This advances the server change id.
   Embed(string url, uint32 node_id) => (bool success);
 
+  // Requests the view manager embed the app for |url| "somewhere". The View
+  // Manager delegates determination of what "somewhere" is to the app embedded
+  // at the service root node (i.e. the window manager).
+  EmbedRoot(string url) => (bool success);

[sky, 2014/07/21 19:26:53]

Using 'root' here implies this gets the root, which is a bit confusing.

+
   // TODO(sky): move these to a separate interface when FIFO works.
 
   // Sends OnViewInputEvent() to the owner of the specified view.