Implement NativeWidgetMac::ReorderNativeViews

ui/views/cocoa/bridged_native_widget.mm

 // Copyright 2014 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.
 
 #import "ui/views/cocoa/bridged_native_widget.h"
 
 #import <objc/runtime.h>
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 866 matching lines @@
     // to generate a window shadow from the composited CALayer. To get around
     // this, let the window background remain opaque and clip the window
     // boundary in drawRect method of BridgedContentView. See crbug.com/543671.
     if (base::mac::IsOSYosemiteOrLater())
       [window_ setBackgroundColor:[NSColor clearColor]];
   }
 
   UpdateLayerProperties();
 }
 
+void BridgedNativeWidget::SetAssociationForView(const views::View* view,
+                                                NSView* native_view) {
+  DCHECK_EQ(0u, associated_views_.count(view));
+  [bridged_view_ addSubview:native_view];
+  associated_views_[view] = native_view;
+  native_widget_mac_->GetWidget()->ReorderNativeViews();
+}
+
+void BridgedNativeWidget::ClearAssociationForView(const views::View* view) {
+  auto it = associated_views_.find(view);
+  DCHECK(it != associated_views_.end());
+  [it->second removeFromSuperview];
+  associated_views_.erase(it);
+}
+
+void BridgedNativeWidget::ReorderChildViews() {
+  ReorderChildNSViews(native_widget_mac_->GetWidget(), associated_views_);
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // BridgedNativeWidget, internal::InputMethodDelegate:
 
 ui::EventDispatchDetails BridgedNativeWidget::DispatchKeyEventPostIME(
     ui::KeyEvent* key) {
   DCHECK(focus_manager_);
   native_widget_mac_->GetWidget()->OnKeyEvent(key);
   if (!key->handled()) {
     if (!focus_manager_->OnKeyEvent(*key))
       key->StopPropagation();
@@ skipping 341 matching lines @@
   [bridged_view_ setMouseDownCanMoveWindow:draggable];
   // AppKit will not update its cache of mouseDownCanMoveWindow unless something
   // changes. Previously we tried adding an NSView and removing it, but for some
   // reason it required reposting the mouse-down event, and didn't always work.
   // Calling the below seems to be an effective solution.
   [window_ setMovableByWindowBackground:NO];
   [window_ setMovableByWindowBackground:YES];
 }
 
 }  // namespace views