Create a RegisterViewAssociate method in ViewManager

mojo/services/ui/views/interfaces/view_manager.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.
 
 [DartPackage="mojo_services"]
 module mojo.ui;
 
 import "mojo/services/ui/views/interfaces/view_associates.mojom";
 import "mojo/services/ui/views/interfaces/view_trees.mojom";
 import "mojo/services/ui/views/interfaces/views.mojom";
@@ skipping 49 matching lines @@
   //
   // The |label| is an optional name to associate with the view tree for
   // diagnostic purposes.  The label will be truncated if it is longer
   // than |kLabelMaxLength|.
   //
   // To destroy the view tree simply close the |view_tree| or
   // |view_tree_listener| message pipes.
   CreateViewTree(mojo.ui.ViewTree& view_tree,
                  mojo.ui.ViewTreeListener view_tree_listener,
                  string? label);
+
+  // Registers a view associate with the view manager.
+  //
+  // The services provided by |view_associate| will be made available to views.
+  //
+  // You receive a |view_associate_owner| which will receive a connection error
+  // callback if |view_associate| is closed. Conversely, the service for
+  // |view_associate| will be destroyed if |view_associate_owner| is destroyed.
+  //
+  // |label| is used to identify the ViewAssociate for debug purposes.
+  //
+  // TODO(mikejurka): This method should only be made accessible to trusted
+  // services, once we have a security story
+  RegisterViewAssociate(mojo.ui.ViewAssociate view_associate,
+    mojo.ui.ViewAssociateOwner& view_associate_owner, string? label);
+
+  // Tells the view manager we've registered all our view associates

[jeffbrown, 2016/05/18 18:07:16]

nit: end sentences with a period, here and below

Also please add a TODO indicating we should remove this once dynamic
registration and unregistration is fully supported.

[mikejurka, 2016/05/18 19:09:10]

Done.

+  //
+  // This allows it to prevent views from requesting services from ViewAssociate
+  // before all the ViewAssociates have been registered
+  FinishedRegisteringViewAssociates();
 };