Clear environment variables for nacl_helper

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 12a7c772f6853464a7166fc4347902ede6ec68f0..05723d36a8280526b8c0ad2d3d21b1072af69bcb 100644
--- a/components/nacl/zygote/nacl_fork_delegate_linux.h
+++ b/components/nacl/zygote/nacl_fork_delegate_linux.h
@@ -12,6 +12,10 @@
 #include "base/compiler_specific.h"
 #include "content/public/common/zygote_fork_delegate_linux.h"
 
+namespace base {
+struct LaunchOptions;
+}
+
 template <typename>
 class ScopedVector;
 
@@ -44,6 +48,8 @@ class NaClForkDelegate : public content::ZygoteForkDelegate {
                                     base::TerminationStatus* status,
                                     int* exit_code) OVERRIDE;
 
+  static void AddPassthroughEnvToOptions(base::LaunchOptions& options);

[jln (very slow on Chromium), 2014/06/02 21:31:47]

Style: make this a pointer instead as it is non-const.

Also could you add some basic documentation?

Shouldn't it be private?

[elijahtaylor1, 2014/06/03 20:47:54]

Done.
Added to the declaration of NACL_ENV_PASSTHROUGH
Sure, if you don't mind a friend declaration for testing

+
  private:
   // These values are reported via UMA and hence they become permanent
   // constants.  Old values cannot be reused, only new ones added.