Allow overriding of X error functions

chrome/gpu/gpu_thread.cc

Index: chrome/gpu/gpu_thread.cc
diff --git a/chrome/gpu/gpu_thread.cc b/chrome/gpu/gpu_thread.cc
index 2ce492ced32ea77a1b9b4f3125acb3e952f3b467..8453853dcfedaba8e779e2776ec673f506d10acc 100644
--- a/chrome/gpu/gpu_thread.cc
+++ b/chrome/gpu/gpu_thread.cc
@@ -26,6 +26,7 @@
 #endif
 
 #if defined(OS_LINUX)
+#include "app/x11_util.h"
 #include <gtk/gtk.h>
 #endif
 
@@ -57,7 +58,7 @@ GpuThread::GpuThread() {
     for (size_t i = 0; i < args.size(); ++i) {
       free(argv[i]);
     }
-    x11_util::SetX11ErrorHandlers();
+    x11_util::SetDefaultX11ErrorHandlers();
   }
 #endif
 }