Start to decouple display::Display from ws::PlatformDisplay.

services/ui/ws/platform_display_init_params.cc

Index: services/ui/ws/platform_display_init_params.cc
diff --git a/services/ui/ws/platform_display_init_params.cc b/services/ui/ws/platform_display_init_params.cc
deleted file mode 100644
index f8e871c0136f4ee4ed1b3ece2cd21646c303e816..0000000000000000000000000000000000000000
--- a/services/ui/ws/platform_display_init_params.cc
+++ /dev/null
@@ -1,22 +0,0 @@
-// 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 "services/ui/ws/platform_display_init_params.h"
-
-#include "services/ui/ws/server_window.h"
-#include "ui/display/types/display_constants.h"
-
-namespace ui {
-namespace ws {
-
-PlatformDisplayInitParams::PlatformDisplayInitParams()
-    : display_id(display::kInvalidDisplayId) {}
-
-PlatformDisplayInitParams::PlatformDisplayInitParams(
-    const PlatformDisplayInitParams& other) = default;
-
-PlatformDisplayInitParams::~PlatformDisplayInitParams() {}
-
-}  // namespace ws
-}  // namespace ui