Fix speech input bubble in GTK to avoid setting images when not visible.
Fix speech input bubble in GTK to avoid setting images when not visible.

The visibility of the speech input bubble was not being checked when a image was requested to be set. Consequently, this could lead to invalid image objects in some cases producing glib and GTK errors.

BUG=70223
TEST=none

Review URL: http://codereview.chromium.org/6272018

git-svn-id: http://src.chromium.org/svn/trunk/src@72501 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 7adc2b68b5a47a4889e37dd7d7f03d282072a5fb
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser