Support accept attribute for an <input type=file> element....

chrome/browser/tab_contents/tab_contents_file_select_helper.h

 // Copyright (c) 2010 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 CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_FILE_SELECT_HELPER_H_
 #define CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_FILE_SELECT_HELPER_H_
 #pragma once
 
 #include <vector>
 
@@ skipping 28 matching lines @@
   // RenderViewHostDelegate::FileSelect
   virtual void RunFileChooser(const ViewHostMsg_RunFileChooser_Params& params);
 
  private:
   // Returns the RenderViewHost of tab_contents_.
   RenderViewHost* GetRenderViewHost();
 
   // Helper method for handling the SelectFileDialog::Listener callbacks.
   void DirectorySelected(const FilePath& path);
 
+  // Helper method to get allowed extensions for select file dialog from
+  // the specified accept types as defined in the spec:
+  //   http://whatwg.org/html/number-state.html#attr-input-accept
+  SelectFileDialog::FileTypeInfo* GetFileTypesFromAcceptType(
+      const string16& accept_types);
+
   // The tab contents this class is helping.  |tab_contents_| owns this object,
   // so this pointer is guaranteed to be valid.
   TabContents* tab_contents_;
 
   // Dialog box used for choosing files to upload from file form fields.
   scoped_refptr<SelectFileDialog> select_file_dialog_;
 
   // The type of file dialog last shown.
   SelectFileDialog::Type dialog_type_;
 
   // The current directory lister (runs on a separate thread).
   scoped_refptr<net::DirectoryLister> directory_lister_;
 
   // The current directory lister results, which may update incrementally
   // as the listing proceeds.
   std::vector<FilePath> directory_lister_results_;
 
   DISALLOW_COPY_AND_ASSIGN(TabContentsFileSelectHelper);
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_FILE_SELECT_HELPER_H_