Items in the Downloads page should be loaded like a normal OS file when dragg...

chrome/browser/download/download_util.cc

 // Copyright (c) 2009 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
 
 #include "chrome/browser/download/download_util.h"
 
 #include <string>
 
 #include "app/gfx/canvas.h"
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "base/file_util.h"
 #include "base/string_util.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/download/download_item_model.h"
 #include "chrome/browser/download/download_manager.h"
 #include "grit/generated_resources.h"
 #include "grit/locale_settings.h"
 #include "grit/theme_resources.h"
+#include "net/base/mime_util.h"
 #include "skia/ext/image_operations.h"
 #include "third_party/skia/include/core/SkPath.h"
 #include "third_party/skia/include/core/SkShader.h"
 
 #if defined(OS_WIN) || defined(TOOLKIT_VIEWS)
 #include "app/os_exchange_data.h"
 #endif
 
 #if defined(OS_WIN)
 #include "base/base_drag_source.h"
@@ skipping 203 matching lines @@
 }
 
 #if defined(OS_WIN) || defined(TOOLKIT_VIEWS)
 // Download dragging
 void DragDownload(const DownloadItem* download, SkBitmap* icon) {
 #if defined(OS_WIN)
   DCHECK(download);
 
   // Set up our OLE machinery
   scoped_refptr<OSExchangeData> data(new OSExchangeData);
+
+  const FilePath::StringType file_name = download->file_name().value();
   if (icon)
-    drag_utils::CreateDragImageForFile(download->file_name().ToWStringHack(),
-                                       icon, data);
-  data->SetFilename(download->full_path().ToWStringHack());
+    drag_utils::CreateDragImageForFile(file_name, icon, data);
+
+  const FilePath full_path = download->full_path();
+  data->SetFilename(full_path.value());
+
+  std::string mime_type = download->mime_type();
+  if (mime_type.empty())
+    net::GetMimeTypeFromFile(full_path, &mime_type);
+
+  // Add URL so that we can load supported files when dragged to TabContents.
+  if (net::IsSupportedMimeType(mime_type))
+    data->SetURL(GURL(full_path.value()), file_name);
+
   scoped_refptr<BaseDragSource> drag_source(new BaseDragSource);
 
   // Run the drag and drop loop
   DWORD effects;
   DoDragDrop(data.get(), drag_source.get(), DROPEFFECT_COPY | DROPEFFECT_LINK,
              &effects);
 #else
   NOTIMPLEMENTED();
 #endif
 }
 #endif
 
 }  // namespace download_util