Remove usages of XInternAtom

gpu/ipc/service/gpu_watchdog_thread.cc

Index: gpu/ipc/service/gpu_watchdog_thread.cc
diff --git a/gpu/ipc/service/gpu_watchdog_thread.cc b/gpu/ipc/service/gpu_watchdog_thread.cc
index 4006edc693ccd92780dfc8c2bce5d0b4bbccda20..32152351c8badc934afccba3738c9ecad87c8536 100644
--- a/gpu/ipc/service/gpu_watchdog_thread.cc
+++ b/gpu/ipc/service/gpu_watchdog_thread.cc
@@ -31,6 +31,8 @@
 #if defined(USE_X11)
 #include <X11/Xatom.h>
 #include <X11/Xlib.h>
+
+#include "ui/base/x/x11_util.h"  // nogncheck
 #endif
 
 namespace gpu {
@@ -428,7 +430,7 @@ void GpuWatchdogThread::SetupXServer() {
   display_ = XOpenDisplay(NULL);
   window_ = XCreateWindow(display_, DefaultRootWindow(display_), 0, 0, 1, 1, 0,
                           CopyFromParent, InputOutput, CopyFromParent, 0, NULL);
-  atom_ = XInternAtom(display_, "CHECK", False);

[sadrul, 2017/06/01 20:45:30]

I think we need to keep this. Different displays.

[Tom Anderson, 2017/06/01 21:20:42]

Done.  (but for the record, I think atom IDs are the same for each connection
for 1 server)

+  atom_ = ui::GetAtom("CHECK");
   host_tty_ = GetActiveTTY();
 }