Allow using the namespace sandbox in zygote host.

components/nacl/zygote/nacl_fork_delegate_linux.h

Index: components/nacl/zygote/nacl_fork_delegate_linux.h
diff --git a/components/nacl/zygote/nacl_fork_delegate_linux.h b/components/nacl/zygote/nacl_fork_delegate_linux.h
index ba79a7cf54706294dcc0082ac6bb8b0c2312bbfc..b0a2d19ae5c2348904443c2d048e6b1ed38c03c4 100644
--- a/components/nacl/zygote/nacl_fork_delegate_linux.h
+++ b/components/nacl/zygote/nacl_fork_delegate_linux.h
@@ -36,7 +36,7 @@ class NaClForkDelegate : public content::ZygoteForkDelegate {
   explicit NaClForkDelegate(bool nonsfi_mode);
   ~NaClForkDelegate() override;
 
-  void Init(int sandboxdesc, bool enable_layer1_sandbox) override;

[jln (very slow on Chromium), 2015/02/06 00:37:29]

I added that to make it hard to have bugs such as the environment being cleared
on LaunchProcess() and loosing track of the need to sandbox. Could you keep it?

[rickyz (no longer on Chrome), 2015/02/06 01:53:19]

Done.

+  void Init(int sandboxdesc) override;
   void InitialUMA(std::string* uma_name,
                   int* uma_sample,
                   int* uma_boundary_value) override;