Split ui/display types into separate module and have Ozone depend on it

ui/ozone/platform/test/ozone_platform_test.cc

 // Copyright 2013 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/test/ozone_platform_test.h"
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "ui/ozone/ozone_platform.h"
 #include "ui/ozone/ozone_switches.h"
 
+#if defined(OS_CHROMEOS)
+#include "ui/ozone/common/chromeos/native_display_delegate_ozone.h"
+#endif
+
 namespace ui {
 
 OzonePlatformTest::OzonePlatformTest(const base::FilePath& dump_file)
     : surface_factory_ozone_(dump_file) {}
 
 OzonePlatformTest::~OzonePlatformTest() {}
 
 gfx::SurfaceFactoryOzone* OzonePlatformTest::GetSurfaceFactoryOzone() {
   return &surface_factory_ozone_;
 }
 
 ui::EventFactoryOzone* OzonePlatformTest::GetEventFactoryOzone() {
   return &event_factory_ozone_;
 }
 
 ui::InputMethodContextFactoryOzone*
 OzonePlatformTest::GetInputMethodContextFactoryOzone() {
   return &input_method_context_factory_ozone_;
 }
 
 ui::CursorFactoryOzone* OzonePlatformTest::GetCursorFactoryOzone() {
   return &cursor_factory_ozone_;
 }
 
+ui::NativeDisplayDelegate* OzonePlatformTest::CreateNativeDisplayDelegate() {
+#if defined(OS_CHROMEOS)
+  return new NativeDisplayDelegateOzone();
+#else
+  return NULL;
+#endif
+}
+
 OzonePlatform* CreateOzonePlatformTest() {
   CommandLine* cmd = CommandLine::ForCurrentProcess();
   base::FilePath location = base::FilePath("/dev/null");
   if (cmd->HasSwitch(switches::kOzoneDumpFile))
     location = cmd->GetSwitchValuePath(switches::kOzoneDumpFile);
   return new OzonePlatformTest(location);
 }
 
 }  // namespace ui