[Linux] Allows find bar's GtkEntry to handle the key events first.
[Linux] Allows find bar's GtkEntry to handle the key events first.

BUG=32384: IME within search box doesn't accept text properly
TEST=See the bug report.

Review URL: http://codereview.chromium.org/560006

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@37785 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser