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

ui/base/dragdrop/os_exchange_data.h

Index: ui/base/dragdrop/os_exchange_data.h
diff --git a/ui/base/dragdrop/os_exchange_data.h b/ui/base/dragdrop/os_exchange_data.h
index 40cc6a1de4a30e82c31700e0787e3733eeca187f..5a1cbd507e93c0803eff68b520b76a7fe9cc3d65 100644
--- a/ui/base/dragdrop/os_exchange_data.h
+++ b/ui/base/dragdrop/os_exchange_data.h
@@ -33,6 +33,8 @@ class Vector2d;
 
 namespace ui {
 
+struct FileInfo;
+
 ///////////////////////////////////////////////////////////////////////////////
 //
 // OSExchangeData
@@ -82,17 +84,6 @@ class UI_BASE_EXPORT OSExchangeData {
     scoped_refptr<DownloadFileProvider> downloader;
   };
 
-  // Encapsulates the info about a file.
-  struct UI_BASE_EXPORT FileInfo {
-    FileInfo(const base::FilePath& path, const base::FilePath& display_name);
-    ~FileInfo();
-
-    // The path of the file.
-    base::FilePath path;
-    // The display name of the file. This field is optional.
-    base::FilePath display_name;
-  };
-
   // Provider defines the platform specific part of OSExchangeData that
   // interacts with the native system.
   class UI_BASE_EXPORT Provider {