Makes views be initially hidden

mojo/services/view_manager/server_view.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_VIEW_MANAGER_SERVER_VIEW_H_
 #define MOJO_SERVICES_VIEW_MANAGER_SERVER_VIEW_H_
 
 #include <vector>
 
 #include "base/logging.h"
@@ skipping 57 matching lines @@
   }
   void SetProperty(const std::string& name, const std::vector<uint8_t>* value);
 
   // Returns true if this view is attached to |root| and all ancestors are
   // visible.
   bool IsDrawn(const ServerView* root) const;
 
   void SetSurfaceId(cc::SurfaceId surface_id);
   const cc::SurfaceId surface_id() const { return surface_id_; }
 
+#if !defined(NDEBUG)
+  std::string GetDebugWindowHierarchy() const;
+  void BuildDebugInfo(const std::string& depth, std::string* result) const;
+#endif
+
  private:
   typedef std::vector<ServerView*> Views;
 
   // Implementation of removing a view. Doesn't send any notification.
   void RemoveImpl(ServerView* view);
 
   ServerViewDelegate* delegate_;
   const ViewId id_;
   ServerView* parent_;
   Views children_;
   bool visible_;
   gfx::Rect bounds_;
   cc::SurfaceId surface_id_;
   float opacity_;
 
   std::map<std::string, std::vector<uint8_t>> properties_;
 
   DISALLOW_COPY_AND_ASSIGN(ServerView);
 };
 
 }  // namespace service
 }  // namespace mojo
 
 #endif  // MOJO_SERVICES_VIEW_MANAGER_SERVER_VIEW_H_