Move DevTools out of ash and turn it to a component.

components/ui_devtools/views/window_element.h

Index: components/ui_devtools/views/window_element.h
diff --git a/ash/devtools/window_element.h b/components/ui_devtools/views/window_element.h
similarity index 81%
rename from ash/devtools/window_element.h
rename to components/ui_devtools/views/window_element.h
index 2f4996f4f9cd9568b6d03a664e0df0490a9b8a1b..7eebd78e7d851f391dfae6e49e9ad097c30bd21d 100644
--- a/ash/devtools/window_element.h
+++ b/components/ui_devtools/views/window_element.h
@@ -2,20 +2,19 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef ASH_DEVTOOLS_WINDOW_ELEMENT_H_
-#define ASH_DEVTOOLS_WINDOW_ELEMENT_H_
+#ifndef COMPONENTS_UI_DEVTOOLS_VIEWS_WINDOW_ELEMENT_H_
+#define COMPONENTS_UI_DEVTOOLS_VIEWS_WINDOW_ELEMENT_H_
 
-#include "ash/ash_export.h"
-#include "ash/devtools/ui_element.h"
 #include "base/macros.h"
+#include "components/ui_devtools/views/ui_element.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_observer.h"
 #include "ui/gfx/geometry/rect.h"
 
-namespace ash {
+namespace ui {
 namespace devtools {
 
-class ASH_EXPORT WindowElement : public aura::WindowObserver, public UIElement {
+class WindowElement : public aura::WindowObserver, public UIElement {
  public:
   WindowElement(aura::Window* window,
                 UIElementDelegate* ui_element_delegate,
@@ -49,6 +48,6 @@ class ASH_EXPORT WindowElement : public aura::WindowObserver, public UIElement {
 };
 
 }  // namespace devtools
-}  // namespace ash
+}  // namespace ui
 
-#endif  // ASH_DEVTOOLS_WINDOW_ELEMENT_H_
+#endif  // COMPONENTS_UI_DEVTOOLS_VIEWS_WINDOW_ELEMENT_H_