Use FilePaths in content::DropData to avoid redundant conversions.

content/public/common/drop_data.h

 // Copyright 2013 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.
 
 // A struct for managing data being dropped on a WebContents.  This represents
 // a union of all the types of data that can be dropped in a platform neutral
 // way.
 
 #ifndef CONTENT_PUBLIC_COMMON_DROP_DATA_H_
 #define CONTENT_PUBLIC_COMMON_DROP_DATA_H_
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/strings/nullable_string16.h"
 #include "content/common/content_export.h"
 #include "third_party/WebKit/public/platform/WebReferrerPolicy.h"
+#include "ui/base/dragdrop/file_info.h"
 #include "url/gurl.h"
 
 namespace content {
 
 struct CONTENT_EXPORT DropData {
-  // The struct is used to represent a file in the drop data.
-  struct CONTENT_EXPORT FileInfo {
-    FileInfo();
-    FileInfo(const base::string16& path, const base::string16& display_name);
-
-    // The path of the file.
-    base::string16 path;
-    // The display name of the file. This field is optional.
-    base::string16 display_name;
-  };
-
   DropData();
   ~DropData();
 
   // Whether this drag originated from a renderer.
   bool did_originate_from_renderer;
 
   // User is dragging a link into the webview.
   GURL url;
   base::string16 url_title;  // The title associated with |url|.
 
   // User is dragging a link out-of the webview.
   base::string16 download_metadata;
 
   // Referrer policy to use when dragging a link out of the webview results in
   // a download.
   blink::WebReferrerPolicy referrer_policy;
 
   // User is dropping one or more files on the webview. This field is only
   // populated if the drag is not renderer tainted, as this allows File access
   // from web content.
-  std::vector<FileInfo> filenames;
+  std::vector<ui::FileInfo> filenames;
 
   // Isolated filesystem ID for the files being dragged on the webview.
   base::string16 filesystem_id;
 
   // User is dragging plain text into the webview.
   base::NullableString16 text;
 
   // User is dragging text/html into the webview (e.g., out of Firefox).
   // |html_base_url| is the URL that the html fragment is taken from (used to
   // resolve relative links).  It's ok for |html_base_url| to be empty.
   base::NullableString16 html;
   GURL html_base_url;
 
   // User is dragging data from the webview (e.g., an image).
   base::string16 file_description_filename;
   std::string file_contents;
 
   std::map<base::string16, base::string16> custom_data;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_DROP_DATA_H_