Remove OnRootRemoved from ViewManagerDelegate

mojo/services/public/cpp/view_manager/lib/view_manager_client_impl.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 "mojo/services/public/cpp/view_manager/lib/view_manager_client_impl.h"
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "mojo/public/cpp/application/application.h"
 #include "mojo/public/cpp/application/connect.h"
@@ skipping 797 matching lines @@
       return;
   }
   roots_.push_back(root);
   root->AddObserver(new RootObserver(root));
   delegate_->OnRootAdded(this, root);
 }
 
 void ViewManagerClientImpl::RemoveRoot(Node* root) {
   std::vector<Node*>::iterator it =
       std::find(roots_.begin(), roots_.end(), root);
-  if (it != roots_.end()) {
+  if (it != roots_.end())
     roots_.erase(it);
-    delegate_->OnRootRemoved(this, root);
-  }
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // ViewManager, public:
 
 // static
 void ViewManager::Create(Application* application,
                          ViewManagerDelegate* delegate) {
   application->AddService<ViewManagerClientImpl>(delegate);
 }
 
 }  // namespace view_manager
 }  // namespace mojo