GTK: Part 1 of removing GtkWidget->window to close up GSEALs.

(The accessor gtk_widget_get_window was added in 2.14, so it was never used in
initial linux port development.)

BUG=79722
TEST=none


Review URL: http://codereview.chromium.org/8625001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@111091 0039d316-1c4b-4281-b951-d872f2087c98
6 files changed