Remove ash dependency.

ash/devtools/window_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/window_element.h"
 
 #include "ash/devtools/ui_element_delegate.h"
 #include "ui/aura/window.h"
 
 namespace ash {
@@ skipping 20 matching lines @@
 
 WindowElement::~WindowElement() {
   if (window_)
     window_->RemoveObserver(this);
 }
 
 // Handles removing window_.
 void WindowElement::OnWindowHierarchyChanging(
     const aura::WindowObserver::HierarchyChangeParams& params) {
   if (params.target == window_) {
+    LOG(ERROR) << __PRETTY_FUNCTION__;
     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) {
+    LOG(ERROR) << __PRETTY_FUNCTION__;
     if (delegate()->IsHighlightingWindow(params.target))
       return;
+    LOG(ERROR) << __PRETTY_FUNCTION__ << " node_id: " << node_id()
+               << " -- window_ bounds: "
+               << window_->GetBoundsInScreen().ToString();
     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));
 }
 
@@ skipping 29 matching lines @@
 }
 
 // static
 aura::Window* WindowElement::From(UIElement* element) {
   DCHECK_EQ(UIElementType::WINDOW, element->type());
   return static_cast<WindowElement*>(element)->window_;
 }
 
 }  // namespace devtools
 }  // namespace ash