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

ash/devtools/view_element.cc

Index: ash/devtools/view_element.cc
diff --git a/ash/devtools/view_element.cc b/ash/devtools/view_element.cc
deleted file mode 100644
index 862a454ab1bf1fd3f82f397f8243184f7a0895cf..0000000000000000000000000000000000000000
--- a/ash/devtools/view_element.cc
+++ /dev/null
@@ -1,89 +0,0 @@
-// 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 "ash/devtools/ui_element_delegate.h"
-#include "ui/views/widget/widget.h"
-
-namespace ash {
-namespace 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);
-}
-
-void ViewElement::OnChildViewRemoved(views::View* parent, views::View* view) {
-  DCHECK_EQ(parent, view_);
-  auto iter = std::find_if(
-      children().begin(), children().end(), [view](UIElement* child) {
-        return view ==
-               UIElement::GetBackingElement<views::View, ViewElement>(child);
-      });
-  DCHECK(iter != children().end());
-  UIElement* child_element = *iter;
-  RemoveChild(child_element);
-  delete child_element;
-}
-
-void ViewElement::OnChildViewAdded(views::View* parent, views::View* view) {
-  DCHECK_EQ(parent, view_);
-  AddChild(new ViewElement(view, delegate(), this),
-           children().empty() ? nullptr : children().back());
-}
-
-void ViewElement::OnChildViewReordered(views::View* parent, views::View* view) {
-  DCHECK_EQ(parent, view_);
-  auto iter = std::find_if(
-      children().begin(), children().end(), [view](UIElement* child) {
-        return view ==
-               UIElement::GetBackingElement<views::View, ViewElement>(child);
-      });
-  DCHECK(iter != children().end());
-  UIElement* child_element = *iter;
-  ReorderChild(child_element, parent->GetIndexOf(view));
-}
-
-void ViewElement::OnViewBoundsChanged(views::View* view) {
-  DCHECK_EQ(view_, view);
-  delegate()->OnUIElementBoundsChanged(this);
-}
-
-void ViewElement::GetBounds(gfx::Rect* bounds) const {
-  *bounds = view_->bounds();
-}
-
-void ViewElement::SetBounds(const gfx::Rect& bounds) {
-  view_->SetBoundsRect(bounds);
-}
-
-void ViewElement::GetVisible(bool* visible) const {
-  *visible = view_->visible();
-}
-
-void ViewElement::SetVisible(bool visible) {
-  view_->SetVisible(visible);
-}
-
-std::pair<aura::Window*, gfx::Rect> ViewElement::GetNodeWindowAndBounds()
-    const {
-  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