Show gpu process sandbox status in the about:gpu page.

content/public/common/gpu_info.h

 // Copyright (c) 2012 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.
 
 #ifndef CONTENT_PUBLIC_COMMON_GPU_INFO_H_
 #define CONTENT_PUBLIC_COMMON_GPU_INFO_H_
 
 // Provides access to the GPU information for the system
 // on which chrome is currently running.
 
@@ skipping 86 matching lines @@
   bool can_lose_context;
 
   // Whether gpu or driver is accessible.
   bool gpu_accessible;
 
   // By default all values are 0.
   GpuPerformanceStats performance_stats;
 
   bool software_rendering;
 
+  // Whether the gpu process is running in a sandbox.
+  bool sandboxed;
+
 #if defined(OS_WIN)
   // The information returned by the DirectX Diagnostics Tool.
   DxDiagNode dx_diagnostics;
 #endif
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_GPU_INFO_H_