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

ash/devtools/window_element.cc

Index: ash/devtools/window_element.cc
diff --git a/ash/devtools/window_element.cc b/ash/devtools/window_element.cc
deleted file mode 100644
index fa9ee2c76c51648a1b84aa49348f55de28565c59..0000000000000000000000000000000000000000
--- a/ash/devtools/window_element.cc
+++ /dev/null
@@ -1,100 +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/window_element.h"
-
-#include "ash/devtools/ui_element_delegate.h"
-#include "ui/aura/window.h"
-
-namespace ash {
-namespace devtools {
-namespace {
-
-int GetIndexOfChildInParent(aura::Window* window) {
-  const aura::Window::Windows& siblings = window->parent()->children();
-  auto it = std::find(siblings.begin(), siblings.end(), window);
-  DCHECK(it != siblings.end());
-  return std::distance(siblings.begin(), it);
-}
-
-}  // namespace
-
-WindowElement::WindowElement(aura::Window* window,
-                             UIElementDelegate* ui_element_delegate,
-                             UIElement* parent)
-    : UIElement(UIElementType::WINDOW, ui_element_delegate, parent),
-      window_(window) {
-  if (window)
-    window_->AddObserver(this);
-}
-
-WindowElement::~WindowElement() {
-  if (window_)
-    window_->RemoveObserver(this);
-}
-
-// Handles removing window_.
-void WindowElement::OnWindowHierarchyChanging(
-    const aura::WindowObserver::HierarchyChangeParams& params) {
-  if (params.target == window_) {
-    parent()->RemoveChild(this);
-    delete this;
-  }
-}
-
-// Handles adding window_.
-void WindowElement::OnWindowHierarchyChanged(
-    const aura::WindowObserver::HierarchyChangeParams& params) {
-  if (window_ == params.new_parent && params.receiver == params.new_parent) {
-    if (delegate()->IsHighlightingWindow(params.target))
-      return;
-    AddChild(new WindowElement(params.target, delegate(), this),
-             children().empty() ? nullptr : children().back());
-  }
-}
-
-void WindowElement::OnWindowStackingChanged(aura::Window* window) {
-  DCHECK_EQ(window_, window);
-  parent()->ReorderChild(this, GetIndexOfChildInParent(window));
-}
-
-void WindowElement::OnWindowBoundsChanged(aura::Window* window,
-                                          const gfx::Rect& old_bounds,
-                                          const gfx::Rect& new_bounds) {
-  DCHECK_EQ(window_, window);
-  delegate()->OnUIElementBoundsChanged(this);
-}
-
-void WindowElement::GetBounds(gfx::Rect* bounds) const {
-  *bounds = window_->bounds();
-}
-
-void WindowElement::SetBounds(const gfx::Rect& bounds) {
-  window_->SetBounds(bounds);
-}
-
-void WindowElement::GetVisible(bool* visible) const {
-  *visible = window_->IsVisible();
-}
-
-void WindowElement::SetVisible(bool visible) {
-  if (visible)
-    window_->Show();
-  else
-    window_->Hide();
-}
-
-std::pair<aura::Window*, gfx::Rect> WindowElement::GetNodeWindowAndBounds()
-    const {
-  return std::make_pair(window_, window_->GetBoundsInScreen());
-}
-
-// static
-aura::Window* WindowElement::From(UIElement* element) {
-  DCHECK_EQ(UIElementType::WINDOW, element->type());
-  return static_cast<WindowElement*>(element)->window_;
-}
-
-}  // namespace devtools
-}  // namespace ash