Fix namespace for src/ui/display/.

ash/shell.cc

Index: ash/shell.cc
diff --git a/ash/shell.cc b/ash/shell.cc
index d9ee2f269362c2cf2bebf99e3d0826ae692af6a9..874a622df4848a5eca2bc271091e0636bc0f1cf0 100644
--- a/ash/shell.cc
+++ b/ash/shell.cc
@@ -389,7 +389,7 @@ Shell::Shell(ShellDelegate* delegate)
       link_handler_model_factory_(nullptr),
       activation_client_(nullptr),
 #if defined(OS_CHROMEOS)
-      display_configurator_(new ui::DisplayConfigurator()),
+      display_configurator_(new display::DisplayConfigurator()),
 #endif  // defined(OS_CHROMEOS)
       native_cursor_manager_(nullptr),
       simulate_modal_window_open_for_testing_(false),
@@ -604,8 +604,9 @@ void Shell::Init(const ShellInitParams& init_params) {
       ui::OzonePlatform::GetInstance()->CreateNativeDisplayDelegate(),
       !gpu_support_->IsPanelFittingDisabled());
 #elif defined(USE_X11)
-  display_configurator_->Init(base::MakeUnique<ui::NativeDisplayDelegateX11>(),
-                              !gpu_support_->IsPanelFittingDisabled());
+  display_configurator_->Init(
+      base::MakeUnique<display::NativeDisplayDelegateX11>(),
+      !gpu_support_->IsPanelFittingDisabled());
 #endif
 
   // The DBusThreadManager must outlive this Shell. See the DCHECK in ~Shell.