mojo: Fix running view-manager related apptests on X11.

ui/gl/test/gl_surface_test_support.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/gl/test/gl_surface_test_support.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "ui/gl/gl_context.h"
 #include "ui/gl/gl_implementation.h"
 #include "ui/gl/gl_surface.h"
 #include "ui/gl/gl_switches.h"
 
 #if defined(USE_X11)
 #include <X11/Xlib.h>
+#include "ui/platform_window/x11/x11_window.h"
 #endif
 
 namespace gfx {
 
 // static
 void GLSurfaceTestSupport::InitializeOneOff() {
   DCHECK_EQ(kGLImplementationNone, GetGLImplementation());
 
 #if defined(USE_X11)
   XInitThreads();
+  ui::test::SetUseOverrideRedirectWindowByDefault(true);
 #endif
 
   bool use_osmesa = true;
 
   // We usually use OSMesa as this works on all bots. The command line can
   // override this behaviour to use hardware GL.
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kUseGpuInTests)) {
     use_osmesa = false;
   }
@@ skipping 39 matching lines @@
       kGLImplementationMockGL, fallback_to_osmesa, gpu_service_logging,
       disable_gl_drawing));
 }
 
 // static
 void GLSurfaceTestSupport::InitializeDynamicMockBindings(GLContext* context) {
   CHECK(InitializeDynamicGLBindings(kGLImplementationMockGL, context));
 }
 
 }  // namespace gfx