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

components/ui_devtools/devtools/widget_element.cc

 // Copyright 2017 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 "ash/devtools/widget_element.h"
+#include "components/ui_devtools/devtools/widget_element.h"
 
-#include "ash/devtools/ui_element_delegate.h"
+#include "components/ui_devtools/devtools/ui_element_delegate.h"
 
-namespace ash {
+namespace ui {
 namespace devtools {
 
 WidgetElement::WidgetElement(views::Widget* widget,
                              UIElementDelegate* ui_element_delegate,
                              UIElement* parent)
     : UIElement(UIElementType::WIDGET, ui_element_delegate, parent),
       widget_(widget) {
   widget_->AddRemovalsObserver(this);
 }
 
@@ skipping 43 matching lines @@
                         widget_->GetWindowBoundsInScreen());
 }
 
 // static
 views::Widget* WidgetElement::From(UIElement* element) {
   DCHECK_EQ(UIElementType::WIDGET, element->type());
   return static_cast<WidgetElement*>(element)->widget_;
 }
 
 }  // namespace devtools
-}  // namespace ash
+}  // namespace ui