MacViews: Implemented Drag & Drop

ui/base/dragdrop/drag_utils_mac.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.
 
 #include "ui/base/dragdrop/drag_utils.h"
 
 #include "base/logging.h"
+#include "ui/base/dragdrop/os_exchange_data.h"
+#include "ui/gfx/canvas.h"
+#include "ui/gfx/image/image_skia.h"
 
 namespace drag_utils {
 
 void SetDragImageOnDataObject(const gfx::Canvas& canvas,
                               const gfx::Vector2d& cursor_offset,
                               ui::OSExchangeData* data_object) {
-  NOTIMPLEMENTED();
+  gfx::ImageSkia image = gfx::ImageSkia(canvas.ExtractImageRep());
+  SetDragImageOnDataObject(image, cursor_offset, data_object);
 }
 
 void SetDragImageOnDataObject(const gfx::ImageSkia& image_skia,
                               const gfx::Vector2d& cursor_offset,
                               ui::OSExchangeData* data_object) {
-  NOTIMPLEMENTED();
+  data_object->provider().SetDragImage(image_skia, cursor_offset);

[tapted, 2016/05/24 08:06:00]

hum - these are the same implementations provided by drag_utils.cc and
drag_utils_aura.cc

I think we should:

- move drag_utils_aura.cc into drag_utils.cc and guard it with #if
!defined(OS_WIN). delete drag_utils_aura.cc

- compile and link drag_utils.cc on Mac

- delete drag_utils_mac.mm

[spqchan, 2016/05/26 01:56:53]

Done.

 }
 
 }  // namespace drag_utils