Fix namespace for src/ui/display/.

ui/ozone/platform/x11/ozone_platform_x11.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/ozone/platform/x11/ozone_platform_x11.h"
 
 #include <X11/Xlib.h>
 
 #include <memory>
 #include <utility>
@@ skipping 66 matching lines @@
       PlatformWindowDelegate* delegate,
       const gfx::Rect& bounds) override {
     std::unique_ptr<X11WindowOzone> window = base::MakeUnique<X11WindowOzone>(
         event_source_.get(), window_manager_.get(), delegate);
     window->SetBounds(bounds);
     window->Create();
     window->SetTitle(base::ASCIIToUTF16("Ozone X11"));
     return std::move(window);
   }
 
-  std::unique_ptr<NativeDisplayDelegate> CreateNativeDisplayDelegate()
+  std::unique_ptr<display::NativeDisplayDelegate> CreateNativeDisplayDelegate()
       override {
     return base::MakeUnique<display::FakeDisplayDelegate>();
   }
 
   void InitializeUI() override {
     window_manager_.reset(new X11WindowManagerOzone);
     if (!event_source_)
       event_source_.reset(new X11EventSourceLibevent(gfx::GetXDisplay()));
     overlay_manager_.reset(new StubOverlayManager());
     input_controller_ = CreateStubInputController();
@@ skipping 24 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(OzonePlatformX11);
 };
 
 }  // namespace
 
 OzonePlatform* CreateOzonePlatformX11() {
   return new OzonePlatformX11;
 }
 
 }  // namespace ui