Change dialog texts for folder upload to explicitly indicate it's for 'Uploading'

ui/shell_dialogs/select_file_dialog.h

 // Copyright (c) 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.
 
 #ifndef UI_SHELL_DIALOGS_SELECT_FILE_DIALOG_H_
 #define UI_SHELL_DIALOGS_SELECT_FILE_DIALOG_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 13 matching lines @@
 struct SelectedFileInfo;
 class ShellDialogsDelegate;
 
 // Shows a dialog box for selecting a file or a folder.
 class SHELL_DIALOGS_EXPORT SelectFileDialog
     : public base::RefCountedThreadSafe<SelectFileDialog>,
       public BaseShellDialog {
  public:
   enum Type {
     SELECT_NONE,
+
+    // For opening a folder.
     SELECT_FOLDER,
+
+    // Like SELECT_FOLDER, but the dialog UI should explicitly show it's
+    // specifically for "upload".
+    SELECT_UPLOAD_FOLDER,
+
+    // For saving into a file, allowing a nonexistent file to be selected.
     SELECT_SAVEAS_FILE,
+
+    // For opening a file.
     SELECT_OPEN_FILE,
+
+    // Like SELECT_OPEN_FILE, but allowing multiple files to open.
     SELECT_OPEN_MULTI_FILE
   };
 
   // An interface implemented by a Listener object wishing to know about the
   // the result of the Select File/Folder action. These callbacks must be
   // re-entrant.
   class SHELL_DIALOGS_EXPORT Listener {
    public:
     // Notifies the Listener that a file/folder selection has been made. The
     // file/folder path is in |path|. |params| is contextual passed to
@@ skipping 151 matching lines @@
   virtual bool HasMultipleFileTypeChoicesImpl() = 0;
 
   scoped_ptr<SelectFilePolicy> select_file_policy_;
 
   DISALLOW_COPY_AND_ASSIGN(SelectFileDialog);
 };
 
 }  // namespace ui
 
 #endif  // UI_SHELL_DIALOGS_SELECT_FILE_DIALOG_H_