Adds more to viewmanager

mojo/services/view_manager/view.h

Index: mojo/services/view_manager/view.h
diff --git a/mojo/services/view_manager/view.h b/mojo/services/view_manager/view.h
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+++ b/mojo/services/view_manager/view.h
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+// 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_VIEW_MANAGER_VIEW_H_
+#define MOJO_SERVICES_VIEW_MANAGER_VIEW_H_
+
+#include <vector>
+
+#include "base/logging.h"
+#include "mojo/services/view_manager/ids.h"
+#include "mojo/services/view_manager/view_manager_export.h"
+
+namespace mojo {
+namespace services {
+namespace view_manager {
+
+class Node;
+
+// Represents a view. A view may be associated with a single Node.
+class MOJO_VIEW_MANAGER_EXPORT View {
+ public:
+  explicit View(const ViewId& id);
+  ~View();
+
+  const ViewId& id() const { return id_; }
+
+  Node* node() { return node_; }
+
+ private:
+  // Node is responsible for maintaining |node_|.
+  friend class Node;
+
+  void set_node(Node* node) { node_ = node; }
+
+  const ViewId id_;
+  Node* node_;
+
+  DISALLOW_COPY_AND_ASSIGN(View);
+};
+
+}  // namespace view_manager
+}  // namespace services
+}  // namespace mojo
+
+#endif  // MOJO_SERVICES_VIEW_MANAGER_VIEW_H_