Convert download manager to FilePath.

chrome/common/win_util.h

Index: chrome/common/win_util.h
===================================================================
--- chrome/common/win_util.h	(revision 7599)
+++ chrome/common/win_util.h	(working copy)
@@ -15,6 +15,8 @@
 #include "base/scoped_handle.h"
 #include "chrome/common/gfx/chrome_font.h"
 
+class FilePath;
+
 namespace win_util {
 
 // Import ScopedHandle and friends into this namespace for backwards
@@ -112,12 +114,12 @@
 // ask the user, via the Windows "Open With" dialog, for an application to use
 // if 'ask_for_app' is true.
 // Returns 'true' on successful open, 'false' otherwise.
-bool OpenItemViaShell(const std::wstring& full_path, bool ask_for_app);
+bool OpenItemViaShell(const FilePath& full_path, bool ask_for_app);
 
 // The download manager now writes the alternate data stream with the
 // zone on all downloads. This function is equivalent to OpenItemViaShell
 // without showing the zone warning dialog.
-bool OpenItemViaShellNoZoneCheck(const std::wstring& full_path,
+bool OpenItemViaShellNoZoneCheck(const FilePath& full_path,
                                  bool ask_for_app);
 
 // Ask the user, via the Windows "Open With" dialog, for an application to use