NaCl: Remove unused "sandboxed_" field and argument from NaClForkDelegate

content/zygote/zygote_main_linux.cc

Index: content/zygote/zygote_main_linux.cc
diff --git a/content/zygote/zygote_main_linux.cc b/content/zygote/zygote_main_linux.cc
index d8f2ed9fe41d4ac78431bf6015902c9bf92b8877..6144451953e9e466f832c413da7d1820ce91eff1 100644
--- a/content/zygote/zygote_main_linux.cc
+++ b/content/zygote/zygote_main_linux.cc
@@ -463,8 +463,7 @@ bool ZygoteMain(const MainFunctionParams& params,
 
   if (forkdelegate != NULL) {
     VLOG(1) << "ZygoteMain: initializing fork delegate";
-    forkdelegate->Init(setuid_sandbox->IsSuidSandboxChild(),
-                       Zygote::kBrowserDescriptor,
+    forkdelegate->Init(Zygote::kBrowserDescriptor,
                        Zygote::kMagicSandboxIPCDescriptor);
   } else {
     VLOG(1) << "ZygoteMain: fork delegate is NULL";