about:gpu doesn't report sanboxing status correctly on OSX

content/gpu/gpu_main.cc

Index: content/gpu/gpu_main.cc
diff --git a/content/gpu/gpu_main.cc b/content/gpu/gpu_main.cc
index 73762ad241c8dd75919f0d1680801459b7f88d23..c79e6ba2c863a033fa8685f4bf5e5ef586f8dfa7 100644
--- a/content/gpu/gpu_main.cc
+++ b/content/gpu/gpu_main.cc
@@ -54,6 +54,7 @@
 
 #if defined(OS_MACOSX)
 #include "base/message_loop/message_pump_mac.h"
+#include "content/common/sandbox_mac.h"
 #endif
 
 #if defined(ADDRESS_SANITIZER)
@@ -320,6 +321,8 @@ int GpuMain(const MainFunctionParams& parameters) {
     }
 #elif defined(OS_WIN)
     gpu_info.sandboxed = StartSandboxWindows(parameters.sandbox_info);
+#elif defined(OS_MACOSX)
+    gpu_info.sandboxed = Sandbox::SandboxIsCurrentlyActive();
 #endif
   } else {
     dead_on_arrival = true;