Be explicit about target type in platform_util::OpenItem()

chrome/browser/chromeos/file_manager/open_util.h

Index: chrome/browser/chromeos/file_manager/open_util.h
diff --git a/chrome/browser/chromeos/file_manager/open_util.h b/chrome/browser/chromeos/file_manager/open_util.h
index c2c1faa0fd8fc9788b249ad57ac787cb9edc63d9..b6a3561754e97b270228c853e2f6c53652ca7534 100644
--- a/chrome/browser/chromeos/file_manager/open_util.h
+++ b/chrome/browser/chromeos/file_manager/open_util.h
@@ -22,12 +22,13 @@ namespace util {
 // If there is another file manager instance open, this call does nothing.
 void OpenRemovableDrive(Profile* profile, const base::FilePath& file_path);
 
-// Opens an item (file or directory). If the target is a directory, the
-// directory will be opened in the file manager. If the target is a file, the
-// file will be opened using a file handler, a file browser handler, or the
-// browser (open in a tab). The default handler has precedence over other
-// handlers, if defined for the type of the target file.
-void OpenItem(Profile* profile, const base::FilePath& file_path);
+// Opens a file using a file handler, a file browser handler, or the browser
+// (open in a tab). The default handler has precedence over other handlers, if
+// defined for the type of the target file.
+void OpenFile(Profile* profile, const base::FilePath& file_path);
+
+// Open a directory in the file manager.
+void OpenFolder(Profile* profile, const base::FilePath& file_path);
 
 // Opens the file manager for the folder containing the item specified by
 // |file_path|, with the item selected.