[Qt] Set windows key-code for multimedia keys

https://bugs.webkit.org/show_bug.cgi?id=117535

Reviewed by Jocelyn Turcotte.

Map Qt Key-events to their defined windows keycode values.

* platform/qt/PlatformKeyboardEventQt.cpp:
(WebCore::windowsKeyCodeForKeyEvent):

Change-Id: If7dbf14afbcd60d0454334c9bd0a487d3b74b08c
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@151494 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Reviewed-by: Jocelyn Turcotte <jocelyn.turcotte@digia.com>
[Qt] Map rewind and fast forward keys to match GoogleTV

https://bugs.webkit.org/show_bug.cgi?id=117634

Reviewed by Jocelyn Turcotte.

Set the same keycode for media keys rewind and fast-forward as
GoogleTV does.

* platform/qt/PlatformKeyboardEventQt.cpp:
(WebCore::windowsKeyCodeForKeyEvent):

Change-Id: I6bad920686b3e2f07e045b3a22e36eb8d0eb6400
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@151588 268f45cc-cd09-0410-ab3c-d52691b4dbfc
Reviewed-by: Jocelyn Turcotte <jocelyn.turcotte@digia.com>