Move most of ui/views/drag_utils to ui/base/dragdrop so it can be used outside of views. I tried to…

ui/views/drag_utils_win.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 "ui/views/drag_utils.h"
-
-#include <objidl.h>
-#include <shlobj.h>
-#include <shobjidl.h>
-
-#include "base/win/scoped_comptr.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_win.h"
-#include "ui/gfx/canvas_skia.h"
-#include "ui/gfx/gdi_util.h"
-#include "ui/gfx/skbitmap_operations.h"
-
-namespace drag_utils {
-
-static void SetDragImageOnDataObject(HBITMAP hbitmap,
-                                     const gfx::Size& size,
-                                     const gfx::Point& cursor_offset,
-                                     IDataObject* data_object) {
-  base::win::ScopedComPtr<IDragSourceHelper> helper;
-  HRESULT rv = CoCreateInstance(CLSID_DragDropHelper, 0, CLSCTX_INPROC_SERVER,
-                                IID_IDragSourceHelper, helper.ReceiveVoid());
-  if (SUCCEEDED(rv)) {
-    SHDRAGIMAGE sdi;
-    sdi.sizeDragImage = size.ToSIZE();
-    sdi.crColorKey = 0xFFFFFFFF;
-    sdi.hbmpDragImage = hbitmap;
-    sdi.ptOffset = cursor_offset.ToPOINT();
-    helper->InitializeFromBitmap(&sdi, data_object);
-  }
-}
-
-// Blit the contents of the canvas to a new HBITMAP. It is the caller's
-// responsibility to release the |bits| buffer.
-static HBITMAP CreateHBITMAPFromSkBitmap(const SkBitmap& sk_bitmap) {
-  HDC screen_dc = GetDC(NULL);
-  BITMAPINFOHEADER header;
-  gfx::CreateBitmapHeader(sk_bitmap.width(), sk_bitmap.height(), &header);
-  void* bits;
-  HBITMAP bitmap =
-      CreateDIBSection(screen_dc, reinterpret_cast<BITMAPINFO*>(&header),
-                       DIB_RGB_COLORS, &bits, NULL, 0);
-  DCHECK(sk_bitmap.rowBytes() == sk_bitmap.width() * 4);
-  SkAutoLockPixels lock(sk_bitmap);
-  memcpy(
-      bits, sk_bitmap.getPixels(), sk_bitmap.height() * sk_bitmap.rowBytes());
-  ReleaseDC(NULL, screen_dc);
-  return bitmap;
-}
-
-void SetDragImageOnDataObject(const SkBitmap& sk_bitmap,
-                              const gfx::Size& size,
-                              const gfx::Point& cursor_offset,
-                              ui::OSExchangeData* data_object) {
-  DCHECK(data_object && !size.IsEmpty());
-  // InitializeFromBitmap() doesn't expect an alpha channel and is confused
-  // by premultiplied colors, so unpremultiply the bitmap.
-  // SetDragImageOnDataObject(HBITMAP) takes ownership of the bitmap.
-  HBITMAP bitmap = CreateHBITMAPFromSkBitmap(
-      SkBitmapOperations::UnPreMultiply(sk_bitmap));
-
-  // Attach 'bitmap' to the data_object.
-  SetDragImageOnDataObject(bitmap, size, cursor_offset,
-      ui::OSExchangeDataProviderWin::GetIDataObject(*data_object));
-}
-
-}  // namespace drag_utils