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

[jeffbrown, 2016/05/11 23:44:16]

nit: end each sentence with a period

We'll need to do some more work here for security later but we don't know what
form that will take.  So for now, it's ok to leave a TODO.

eg. TODO(mikejurka): This method should only be made accessible to trusted
services, once we have a security story.

[mikejurka, 2016/05/16 23:35:18]

Done.

+  RegisterViewAssociate(mojo.ui.ViewAssociate view_associate);
 };