Add support for multiple roots to the client lib.

mojo/services/public/cpp/view_manager/view_tree_node.h

 // Copyright 2014 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.
 
 #ifndef MOJO_SERVICES_PUBLIC_CPP_VIEW_MANAGER_VIEW_TREE_NODE_H_
 #define MOJO_SERVICES_PUBLIC_CPP_VIEW_MANAGER_VIEW_TREE_NODE_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/observer_list.h"
+#include "mojo/public/cpp/bindings/array.h"
 #include "mojo/services/public/cpp/view_manager/view_manager_types.h"
 #include "ui/gfx/geometry/rect.h"
 
 namespace mojo {
 namespace view_manager {
 
 class View;
 class ViewManager;
 class ViewTreeNodeObserver;
 
@@ skipping 30 matching lines @@
   void RemoveChild(ViewTreeNode* child);
 
   bool Contains(ViewTreeNode* child) const;
 
   ViewTreeNode* GetChildById(TransportNodeId id);
 
   // View.
   void SetActiveView(View* view);
   View* active_view() { return active_view_; }
 
+  // Embedding.
+  void Embed(const String& url);
+
  protected:
   // This class is subclassed only by test classes that provide a public ctor.
   ViewTreeNode();
   ~ViewTreeNode();
 
  private:
   friend class ViewTreeNodePrivate;
 
   explicit ViewTreeNode(ViewManager* manager);
 
@@ skipping 13 matching lines @@
   gfx::Rect bounds_;
   View* active_view_;
 
   DISALLOW_COPY_AND_ASSIGN(ViewTreeNode);
 };
 
 }  // namespace view_manager
 }  // namespace mojo
 
 #endif  // MOJO_SERVICES_PUBLIC_CPP_VIEW_MANAGER_VIEW_TREE_NODE_H_