Remove OnRootRemoved from ViewManagerDelegate

mojo/examples/browser/browser.cc

 // 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.
 
 #include "base/basictypes.h"
 #include "mojo/public/cpp/application/application.h"
 #include "mojo/services/public/cpp/view_manager/node.h"
 #include "mojo/services/public/cpp/view_manager/view.h"
 #include "mojo/services/public/cpp/view_manager/view_manager.h"
 #include "mojo/services/public/cpp/view_manager/view_manager_delegate.h"
@@ skipping 109 matching lines @@
     view_ = view_manager::View::Create(view_manager_);
     view_manager_->GetRoots().front()->SetActiveView(view_);
 
     content_node_ = view_manager::Node::Create(view_manager_);
     root->AddChild(content_node_);
 
     root->SetFocus();
 
     CreateWidget(root->bounds().size());
   }
-  virtual void OnRootRemoved(view_manager::ViewManager* view_manager,
-                             view_manager::Node* root) OVERRIDE {
-  }
 
   // views::TextfieldController:
   virtual bool HandleKeyEvent(views::Textfield* sender,
                               const ui::KeyEvent& key_event) OVERRIDE {
     if (key_event.key_code() == ui::VKEY_RETURN) {
       GURL url(sender->text());
       printf("User entered this URL: %s\n", url.spec().c_str());
       launcher_->Launch(url.spec());
     }
     return false;
@@ skipping 24 matching lines @@
 };
 
 }  // namespace examples
 
 // static
 Application* Application::Create() {
   return new examples::Browser;
 }
 
 }  // namespace mojo