Replace FilePath with base::FilePath in some more top level directories.

ui/base/dragdrop/drag_utils.h

Index: ui/base/dragdrop/drag_utils.h
diff --git a/ui/base/dragdrop/drag_utils.h b/ui/base/dragdrop/drag_utils.h
index 1f84d90cb748d4e86e6d552dc0a63695742324c5..418dc7a5c2bbace742a3eb82d5a4f2520df105bb 100644
--- a/ui/base/dragdrop/drag_utils.h
+++ b/ui/base/dragdrop/drag_utils.h
@@ -30,7 +30,7 @@ namespace drag_utils {
 // Chrome (via the download manager, for example). The drag image is set into
 // the supplied data_object. 'file_name' can be a full path, but the directory
 // portion will be truncated in the drag image.
-UI_EXPORT void CreateDragImageForFile(const FilePath& file_name,
+UI_EXPORT void CreateDragImageForFile(const base::FilePath& file_name,
                                       const gfx::ImageSkia* icon,
                                       ui::OSExchangeData* data_object);