aura: Fix draggin files from downloads page. This was broken from when we

chrome/browser/download/download_util.cc

 // Copyright (c) 2012 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.
 //
 // Download utility implementation
 
 #define _USE_MATH_DEFINES  // For VC++ to get M_PI. This has to be first.
 
 #include "chrome/browser/download/download_util.h"
 
@@ skipping 60 matching lines @@
 #include "chrome/browser/ui/gtk/unity_service.h"
 #endif  // defined(TOOLKIT_GTK)
 
 #if defined(OS_WIN) && !defined(USE_AURA)
 #include "base/win/scoped_comptr.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "ui/base/dragdrop/drag_source.h"
 #include "ui/base/dragdrop/os_exchange_data_provider_win.h"
 #endif
 
+#if defined(USE_AURA)
+#include "ui/aura/client/drag_drop_client.h"
+#include "ui/aura/root_window.h"
+#include "ui/aura/window.h"
+#endif
+
 namespace {
 
 // Returns a string constant to be used as the |danger_type| value in
 // CreateDownloadItemValue().  We only return strings for DANGEROUS_FILE,
 // DANGEROUS_URL, DANGEROUS_CONTENT, and UNCOMMON_CONTENT because the
 // |danger_type| value is only defined if the value of |state| is |DANGEROUS|.
 const char* GetDangerTypeString(content::DownloadDangerType danger_type) {
   switch (danger_type) {
     case content::DOWNLOAD_DANGER_TYPE_DANGEROUS_FILE:
       return "DANGEROUS_FILE";
@@ skipping 309 matching lines @@
     net::GetMimeTypeFromFile(full_path, &mime_type);
 
   // Add URL so that we can load supported files when dragged to WebContents.
   if (net::IsSupportedMimeType(mime_type)) {
     data.SetURL(net::FilePathToFileURL(full_path),
                 download->GetFileNameToReportUser().LossyDisplayName());
   }
 
 #if !defined(TOOLKIT_GTK)
 #if defined(USE_AURA)
-  views::Widget* widget = views::Widget::GetWidgetForNativeView(view);
+  aura::RootWindow* root_window = view->GetRootWindow();
+  if (!root_window || !aura::client::GetDragDropClient(root_window))
+    return;
+
   gfx::Point location = gfx::Screen::GetCursorScreenPoint();
-  // We do not care about notifying the DragItemView on completion of drag. So
-  // we pass NULL to RunShellDrag for the source view.
-  widget->RunShellDrag(NULL, data, location,
+  aura::client::GetDragDropClient(root_window)->StartDragAndDrop(data, location,
       ui::DragDropTypes::DRAG_COPY | ui::DragDropTypes::DRAG_LINK);
 #else  // We are on WIN without AURA
   // We cannot use Widget::RunShellDrag on WIN since the |view| is backed by a
   // TabContentsViewWin, not a NativeWidgetWin.
   scoped_refptr<ui::DragSource> drag_source(new ui::DragSource);
   // Run the drag and drop loop
   DWORD effects;
   DoDragDrop(ui::OSExchangeDataProviderWin::GetIDataObject(data),
              drag_source.get(), DROPEFFECT_COPY | DROPEFFECT_LINK, &effects);
 #endif
@@ skipping 233 matching lines @@
   UMA_HISTOGRAM_ENUMERATION(
       "Download.CountsChrome", type, CHROME_DOWNLOAD_COUNT_TYPES_LAST_ENTRY);
 }
 
 void RecordDownloadSource(ChromeDownloadSource source) {
   UMA_HISTOGRAM_ENUMERATION(
       "Download.SourcesChrome", source, CHROME_DOWNLOAD_SOURCE_LAST_ENTRY);
 }
 
 }  // namespace download_util