Move shell service to toplevel shell namespace

mash/wm/non_client_frame_controller.h

Index: mash/wm/non_client_frame_controller.h
diff --git a/mash/wm/non_client_frame_controller.h b/mash/wm/non_client_frame_controller.h
index 292e5932d17c57a014d177c4e13e0ed3a9bcf4e1..02bed0285baa045f4ea132d8835695ed8188a078 100644
--- a/mash/wm/non_client_frame_controller.h
+++ b/mash/wm/non_client_frame_controller.h
@@ -16,15 +16,15 @@ namespace gfx {
 class Insets;
 }
 
-namespace mojo {
-class Connector;
-}
-
 namespace mus {
 class Window;
 class WindowManagerClient;
 }
 
+namespace shell {
+class Connector;
+}
+
 namespace mash {
 namespace wm {
 
@@ -33,7 +33,7 @@ class NonClientFrameController : public views::WidgetDelegateView,
                                  public mus::WindowObserver {
  public:
   // NonClientFrameController deletes itself when |window| is destroyed.
-  static void Create(mojo::Connector* connector,
+  static void Create(shell::Connector* connector,
                      mus::Window* window,
                      mus::WindowManagerClient* window_manager_client);
 
@@ -47,7 +47,7 @@ class NonClientFrameController : public views::WidgetDelegateView,
   mus::Window* window() { return window_; }
 
  private:
-  NonClientFrameController(mojo::Connector* connector,
+  NonClientFrameController(shell::Connector* connector,
                            mus::Window* window,
                            mus::WindowManagerClient* window_manager_client);
   ~NonClientFrameController() override;