[GTK] Listen to GDK_SCROLL_MASK

[GTK] Listen to GDK_SCROLL_MASK
https://bugs.webkit.org/show_bug.cgi?id=76529

Source/WebKit/gtk:

Set GDK_SCROLL_MASK explicitly, as WebKitWebView does handle
scroll events, scrolling currently works because GTK+ happens
to send such events to widgets listening to GDK_BUTTON_PRESS_MASK,
but this isn't the intended behavior, so it's subject to change.

Patch by Carlos Garnacho <carlosg@gnome.org> on 2012-01-18
Reviewed by Martin Robinson.

* webkit/webkitwebview.cpp:
(webkit_web_view_realize):

Source/WebKit2:

Set GDK_SCROLL_MASK explicitly, as WebKitWebViewBase does handle
scroll events, scrolling currently works because GTK+ happens
to send such events to widgets listening to GDK_BUTTON_PRESS_MASK,
but this isn't the intended behavior, so it's subject to change.

Patch by Carlos Garnacho <carlosg@gnome.org> on 2012-01-18
Reviewed by Martin Robinson.

* UIProcess/API/gtk/WebKitWebViewBase.cpp:
(webkitWebViewBaseRealize):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@105289 268f45cc-cd09-0410-ab3c-d52691b4dbfc