linux aura: Fix window activation in some X11 window managers.

Some X11 window managers do not support extended window manager hints (EWMH) like
_NET_ACTIVE_WINDOW. In such cases, instead of trying to set the _NET_ACTIVE_WINDOW
atom on the X11 RootWindow, use XRaiseWindow() to activate a window.

BUG=317856
R=erg@chromium.org

Review URL: https://codereview.chromium.org/68063003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@235245 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed