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

components/ui_devtools/devtools/ui_element.cc

Index: components/ui_devtools/devtools/ui_element.cc
diff --git a/ash/devtools/ui_element.cc b/components/ui_devtools/devtools/ui_element.cc
similarity index 82%
rename from ash/devtools/ui_element.cc
rename to components/ui_devtools/devtools/ui_element.cc
index 0249d823d1f5ad9f2cf42c683f9dd5f4e6c99f83..177cf512afe282f694668de164885c7439d0f313 100644
--- a/ash/devtools/ui_element.cc
+++ b/components/ui_devtools/devtools/ui_element.cc
@@ -2,16 +2,16 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "ash/devtools/ui_element.h"
+#include "components/ui_devtools/devtools/ui_element.h"
 
 #include <algorithm>
 
-#include "ash/devtools/ui_element_delegate.h"
-#include "ash/devtools/view_element.h"
-#include "ash/devtools/widget_element.h"
-#include "ash/devtools/window_element.h"
+#include "components/ui_devtools/devtools/ui_element_delegate.h"
+#include "components/ui_devtools/devtools/view_element.h"
+#include "components/ui_devtools/devtools/widget_element.h"
+#include "components/ui_devtools/devtools/window_element.h"
 
-namespace ash {
+namespace ui {
 namespace devtools {
 namespace {
 
@@ -63,7 +63,7 @@ void UIElement::ReorderChild(UIElement* child, int new_index) {
   children_.erase(iter);
 
   // Move child to new position |new_index| in vector |children_|.
-  new_index = std::min(children_.size() - 1, static_cast<size_t>(new_index));
+  new_index = std::min(static_cast<int>(children_.size()) - 1, new_index);
   iter = children_.begin() + new_index;
   children_.insert(iter, child);
   delegate()->OnUIElementReordered(child->parent(), child);
@@ -77,4 +77,4 @@ UIElement::UIElement(const UIElementType type,
 }
 
 }  // namespace devtools
-}  // namespace ash
+}  // namespace ui