Fix namespace for src/ui/display/.

ui/display/manager/chromeos/x11/display_mode_x11.cc

Index: ui/display/manager/chromeos/x11/display_mode_x11.cc
diff --git a/ui/display/manager/chromeos/x11/display_mode_x11.cc b/ui/display/manager/chromeos/x11/display_mode_x11.cc
index a84f92bdbaed93b3b851b12d7d1407d3875c3f49..5c6722042d494073dcdbc82b6d812ee13c80acdf 100644
--- a/ui/display/manager/chromeos/x11/display_mode_x11.cc
+++ b/ui/display/manager/chromeos/x11/display_mode_x11.cc
@@ -6,7 +6,7 @@
 
 #include "ui/display/manager/chromeos/x11/display_mode_x11.h"
 
-namespace ui {
+namespace display {
 
 DisplayModeX11::DisplayModeX11(const gfx::Size& size,
                                bool interlaced,
@@ -21,4 +21,4 @@ std::unique_ptr<DisplayMode> DisplayModeX11::Clone() const {
       new DisplayModeX11(size(), is_interlaced(), refresh_rate(), mode_id()));
 }
 
-}  // namespace ui
+}  // namespace display