hidden attribute on <input type=file /> suppresses the file selection dialog

hidden attribute on <input type=file /> suppresses the file selection dialog
https://bugs.webkit.org/show_bug.cgi?id=58208

Patch by Rakesh KN <rakesh.kn@motorola.com> on 2012-02-02
Reviewed by Ryosuke Niwa.

.:

* ManualTests/input-file-hidden-open-dialog-on-click.html: Added.
Adding manual test as the file dialog opens only in User gesture.

Source/WebCore:

We want to allow opening file dialog on hidden element when click() is called
on the element. The behaviour is similar to Firefox and IE.

Added manual test as the file dialog opens only on user gesture.

* html/FileInputType.cpp:
(WebCore::FileInputType::handleDOMActivateEvent):
Removed renderer check as input can be hidden.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@106538 268f45cc-cd09-0410-ab3c-d52691b4dbfc