Add ui devtools server

ui/devtools/switches.cc

Index: ui/devtools/switches.cc
diff --git a/ui/display/types/native_display_delegate.cc b/ui/devtools/switches.cc
similarity index 60%
copy from ui/display/types/native_display_delegate.cc
copy to ui/devtools/switches.cc
index eda782c453ee434d17a048a5437a22712ea930f0..aac63e03779b5b28d515fb916746fa89f718e508 100644
--- a/ui/display/types/native_display_delegate.cc
+++ b/ui/devtools/switches.cc
@@ -2,10 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "ui/display/types/native_display_delegate.h"
+#include "ui/devtools/switches.h"
 
 namespace ui {
+namespace devtools {
 
-NativeDisplayDelegate::~NativeDisplayDelegate() {}
+const char kEnableUiDevTools[] = "enable-ui-devtools";
 
+}  // namespace devtools
 }  // namespace ui