gtk: Allow building both the X11 and Gtk message-pumps for gtk.
This patch allows both the X11 and the Gtk message-pumps to be built
in a linux-gtk build. A subsequent patch will use the X11 message-pump
for the GPU process, while continue to use the Gtk message-pump for the
browser process.
BUG=145600
R=ccameron@chromium.org, oshima@chromium.org, piman@chromium.org, thakis@chromium.org
Review URL: https://codereview.chromium.org/23880006
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@221873 0039d316-1c4b-4281-b951-d872f2087c98
26 files changed
