Revert of Wires up view manager to an actual display

mojo/services/view_manager/root_node_manager.cc

Index: mojo/services/view_manager/root_node_manager.cc
diff --git a/mojo/services/view_manager/root_node_manager.cc b/mojo/services/view_manager/root_node_manager.cc
index 529306de24cee67b67cfa6e3b116f4bec0abd06a..1a17ebd34ad85d3577e23995d8467de487db3b16 100644
--- a/mojo/services/view_manager/root_node_manager.cc
+++ b/mojo/services/view_manager/root_node_manager.cc
@@ -6,7 +6,6 @@
 
 #include "base/logging.h"
 #include "mojo/services/view_manager/view_manager_connection.h"
-#include "ui/aura/env.h"
 
 namespace mojo {
 namespace services {
@@ -17,14 +16,6 @@
 const TransportConnectionSpecificNodeId kRootId = 1;
 
 }  // namespace
-
-RootNodeManager::Context::Context() {
-  // Pass in false as native viewport creates the PlatformEventSource.
-  aura::Env::CreateInstance(false);
-}
-
-RootNodeManager::Context::~Context() {
-}
 
 RootNodeManager::ScopedChange::ScopedChange(ViewManagerConnection* connection,
                                             RootNodeManager* root,
@@ -37,15 +28,12 @@
   root_->FinishChange();
 }
 
-RootNodeManager::RootNodeManager(Shell* shell)
+RootNodeManager::RootNodeManager()
     : next_connection_id_(1),
-      root_view_manager_(shell, this),
       root_(this, NodeId(0, kRootId)) {
 }
 
 RootNodeManager::~RootNodeManager() {
-  // All the connections should have been destroyed.
-  DCHECK(connection_map_.empty());
 }
 
 TransportConnectionId RootNodeManager::GetAndAdvanceNextConnectionId() {
@@ -119,11 +107,24 @@
   change_.reset();
 }
 
+void RootNodeManager::OnCreated() {
+}
+
+void RootNodeManager::OnDestroyed() {
+}
+
+void RootNodeManager::OnBoundsChanged(const Rect& bounds) {
+}
+
+void RootNodeManager::OnEvent(const Event& event,
+                              const mojo::Callback<void()>& callback) {
+  callback.Run();
+}
+
 void RootNodeManager::OnNodeHierarchyChanged(const NodeId& node,
                                              const NodeId& new_parent,
                                              const NodeId& old_parent) {
-  if (!root_view_manager_.in_setup())
-    NotifyNodeHierarchyChanged(node, new_parent, old_parent);
+  NotifyNodeHierarchyChanged(node, new_parent, old_parent);
 }
 
 void RootNodeManager::OnNodeViewReplaced(const NodeId& node,