Fix file-select dialog handling for private key (pem) files.

BUG=106544
TEST=Verify that select file dialog allows selection of pem files.


Review URL: http://codereview.chromium.org/8748021

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@114170 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/resources/options/pack_extension_overlay.js

@@ -77,7 +77,7 @@ cr.define('options', function() {
      * @private
      */
     handleBrowsePrivateKey_: function(e) {
-      this.showFileDialog_('file', 'load', function(filePath) {
+      this.showFileDialog_('file', 'pem', function(filePath) {
         $('extensionPrivateKey').value = filePath;
       });
     },