Move shell service to toplevel shell namespace

ash/mus/shelf_delegate_mus.cc

 // Copyright 2016 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 "ash/mus/shelf_delegate_mus.h"
 
 #include <memory>
 
 #include "ash/shelf/shelf.h"
 #include "ash/shelf/shelf_item_delegate.h"
@@ skipping 96 matching lines @@
 gfx::ImageSkia GetShelfIconFromSerializedBitmap(
     const mojo::Array<uint8_t>& serialized_bitmap) {
   SkBitmap bitmap = mojo::ConvertTo<SkBitmap>(serialized_bitmap.storage());
   return GetShelfIconFromBitmap(bitmap);
 }
 
 }  // namespace
 
 ShelfDelegateMus::ShelfDelegateMus(ShelfModel* model)
     : model_(model), binding_(this) {
-  mojo::Connector* connector =
+  ::shell::Connector* connector =
       views::WindowManagerConnection::Get()->connector();
   connector->ConnectToInterface("mojo:desktop_wm", &user_window_controller_);
   user_window_controller_->AddUserWindowObserver(
       binding_.CreateInterfacePtrAndBind());
 }
 
 ShelfDelegateMus::~ShelfDelegateMus() {}
 
 void ShelfDelegateMus::OnShelfCreated(Shelf* shelf) {
   ShelfWidget* widget = shelf->shelf_widget();
@@ skipping 188 matching lines @@
   DCHECK_GE(index, 0);
   ShelfItems::const_iterator iter = model_->ItemByID(shelf_id);
   DCHECK(iter != model_->items().end());
   ShelfItem item = *iter;
   item.status = has_focus ? STATUS_ACTIVE : STATUS_RUNNING;
   model_->Set(index, item);
 }
 
 }  // namespace sysui
 }  // namespace ash