Changes filter used when importing in bookmark manager to include *.htm.
Changes filter used when importing in bookmark manager to include
*.htm.

BUG=4388
TEST=Create a file name foo.htm. Go to bookmark manager, choose
  import, navigate to directory with foo.htm and make sure the the
  open dialog shows foo.htm.

Review URL: http://codereview.chromium.org/12459

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@6144 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser