Packaged (CRX) extensions shouldn't be able to get 'dev' interfaces in NaCl.

ppapi/native_client/src/shared/ppapi_proxy/browser_globals.h

Index: ppapi/native_client/src/shared/ppapi_proxy/browser_globals.h
===================================================================
--- ppapi/native_client/src/shared/ppapi_proxy/browser_globals.h	(revision 105971)
+++ ppapi/native_client/src/shared/ppapi_proxy/browser_globals.h	(working copy)
@@ -43,7 +43,7 @@
 namespace ppapi_proxy {
 
 // These functions handle the browser-side (trusted code) mapping of a browser
-// Instance to instance-specific data, such as the SRPC communication channel.
+// instance to instance-specific data, such as the SRPC communication channel.
 // These functions are called by the in-browser (trusted) plugin code, and are
 // always called from the main (foreground, UI, ...) thread. As such, they are
 // not thread-safe (they do not need to be).
@@ -52,11 +52,6 @@
 // channel used to talk to the instance.
 class BrowserPpp;
 
-// Returns true if the PPAPI Developer interfaces are enabled.
-// To enable, set the environment variable NACL_ENABLE_PPAPI_DEV=1
-// Note: Developer interfaces are _not_ enabled by default.
-bool AreDevInterfacesEnabled();
-
 // Associate a particular BrowserPpp with a PP_Instance value.  This allows the
 // browser side to look up information it needs to communicate with the stub.
 void SetBrowserPppForInstance(PP_Instance instance,