Remove extraneous namespaces

mojo/examples/window_manager/debug_panel.h

Index: mojo/examples/window_manager/debug_panel.h
diff --git a/mojo/examples/window_manager/debug_panel.h b/mojo/examples/window_manager/debug_panel.h
index 532ebce14050e34b7f8b152468514dc065170bd2..49ae04b720d7a3708f33ff62bbfad52cc2d26b68 100644
--- a/mojo/examples/window_manager/debug_panel.h
+++ b/mojo/examples/window_manager/debug_panel.h
@@ -41,8 +41,8 @@ class DebugPanel : public views::LayoutManager, public views::ButtonListener {
    public:
     virtual void CloseTopWindow() = 0;
     virtual void RequestNavigate(
-        uint32 source_node_id, navigation::Target target,
-        navigation::NavigationDetailsPtr nav_details) = 0;
+        uint32 source_node_id, Target target,
+        NavigationDetailsPtr nav_details) = 0;
    protected:
     virtual ~Delegate(){}
   };
@@ -50,7 +50,7 @@ class DebugPanel : public views::LayoutManager, public views::ButtonListener {
   DebugPanel(Delegate* delegate, view_manager::Node* node);
   virtual ~DebugPanel();
 
-  navigation::Target navigation_target() const;
+  Target navigation_target() const;
 
  private:
   // LayoutManager overrides: