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

components/ui_devtools/views/view_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/view_element.h"
+#include "components/ui_devtools/views/view_element.h"
 
-#include "ash/devtools/ui_element_delegate.h"
+#include "components/ui_devtools/views/ui_element_delegate.h"
 #include "ui/views/widget/widget.h"
 
-namespace ash {
-namespace devtools {
+namespace ui_devtools {
 
 ViewElement::ViewElement(views::View* view,
                          UIElementDelegate* ui_element_delegate,
                          UIElement* parent)
     : UIElement(UIElementType::VIEW, ui_element_delegate, parent), view_(view) {
   view_->AddObserver(this);
 }
 
 ViewElement::~ViewElement() {
   view_->RemoveObserver(this);
@@ skipping 56 matching lines @@
   return std::make_pair(view_->GetWidget()->GetNativeWindow(),
                         view_->GetBoundsInScreen());
 }
 
 // static
 views::View* ViewElement::From(UIElement* element) {
   DCHECK_EQ(UIElementType::VIEW, element->type());
   return static_cast<ViewElement*>(element)->view_;
 }
 
-}  // namespace devtools
-}  // namespace ash
+}  // namespace ui_devtools