Move shell service to toplevel shell namespace

content/renderer/mus/render_widget_window_tree_client_factory.cc

Index: content/renderer/mus/render_widget_window_tree_client_factory.cc
diff --git a/content/renderer/mus/render_widget_window_tree_client_factory.cc b/content/renderer/mus/render_widget_window_tree_client_factory.cc
index 584c2bde215802ea5fec569eea2d2ecdab4e3d43..c383e699388dfe5cd54bd760a5c13e39822a17b7 100644
--- a/content/renderer/mus/render_widget_window_tree_client_factory.cc
+++ b/content/renderer/mus/render_widget_window_tree_client_factory.cc
@@ -25,7 +25,8 @@ namespace {
 // MojoShellConnection::Listener.
 class RenderWidgetWindowTreeClientFactoryImpl
     : public MojoShellConnection::Listener,
-      public mojo::InterfaceFactory<mojom::RenderWidgetWindowTreeClientFactory>,
+      public shell::InterfaceFactory<
+          mojom::RenderWidgetWindowTreeClientFactory>,
       public mojom::RenderWidgetWindowTreeClientFactory {
  public:
   RenderWidgetWindowTreeClientFactoryImpl() {
@@ -37,13 +38,13 @@ class RenderWidgetWindowTreeClientFactoryImpl
 
  private:
   // MojoShellConnection::Listener implementation:
-  bool AcceptConnection(mojo::Connection* connection) override {
+  bool AcceptConnection(shell::Connection* connection) override {
     connection->AddInterface<mojom::RenderWidgetWindowTreeClientFactory>(this);
     return true;
   }
 
-  // mojo::InterfaceFactory<mojom::RenderWidgetWindowTreeClientFactory>:
-  void Create(mojo::Connection* connection,
+  // shell::InterfaceFactory<mojom::RenderWidgetWindowTreeClientFactory>:
+  void Create(shell::Connection* connection,
               mojo::InterfaceRequest<mojom::RenderWidgetWindowTreeClientFactory>
                   request) override {
     bindings_.AddBinding(this, std::move(request));