First shot at implementing drag&drop for Aura

views/drag_utils_aura.cc

+// Copyright (c) 2011 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 "views/drag_utils.h"
+
+#include "base/logging.h"
+#include "third_party/skia/include/core/SkBitmap.h"
+#include "ui/base/dragdrop/os_exchange_data.h"
+#include "ui/base/dragdrop/os_exchange_data_provider_aura.h"
+#include "ui/gfx/canvas.h"
+#include "ui/gfx/point.h"
+#include "ui/gfx/size.h"
+
+using ui::OSExchangeData;
+using ui::OSExchangeDataProviderAura;
+
+namespace drag_utils {
+
+void SetDragImageOnDataObject(const SkBitmap& bitmap,
+                              const gfx::Size& size,
+                              const gfx::Point& cursor_offset,
+                              OSExchangeData* data_object) {
+  OSExchangeDataProviderAura& provider(
+      static_cast<OSExchangeDataProviderAura&>(data_object->provider()));
+  provider.set_drag_image(bitmap);
+}
+
+} // namespace drag_utils