Add an IPC for PNaCl to check if the session is incognito, before deciding

ppapi/api/private/finish_writing_these/ppb_nacl_private.idl

Index: ppapi/api/private/finish_writing_these/ppb_nacl_private.idl
diff --git a/ppapi/api/private/finish_writing_these/ppb_nacl_private.idl b/ppapi/api/private/finish_writing_these/ppb_nacl_private.idl
index c49039880af0cb2a819efade52b871c25e7c7cca..f1a23f7d742ba0a05da691a31efa14677ced398a 100644
--- a/ppapi/api/private/finish_writing_these/ppb_nacl_private.idl
+++ b/ppapi/api/private/finish_writing_these/ppb_nacl_private.idl
@@ -8,20 +8,20 @@
 #include "ppapi/c/private/pp_file_handle.h"
 
 /* PPB_NaCl_Private */
-interface PPB_NaCl_Private_0_7 {
+interface PPB_NaCl_Private_0_8 {
   /* This function launches NaCl's sel_ldr process.  On success, the function
    * returns true, otherwise it returns false.  When it returns true, it will
    * write |socket_count| nacl::Handles to imc_handles.
    */
-  bool LaunchSelLdr([in] PP_Instance instance,
-                    [in] str_t alleged_url,
-                    [in] int32_t socket_count,
-                    [out] mem_t imc_handles);
+  PP_Bool LaunchSelLdr([in] PP_Instance instance,
+                       [in] str_t alleged_url,
+                       [in] int32_t socket_count,
+                       [out] mem_t imc_handles);
 
   /* This function starts the PPAPI proxy so the nexe can communicate with the
    * browser's renderer process.
    */
-  bool StartPpapiProxy([in] PP_Instance instance);
+  PP_Bool StartPpapiProxy([in] PP_Instance instance);
 
   /* On POSIX systems, this function returns the file descriptor of
    * /dev/urandom.  On non-POSIX systems, this function returns 0.
@@ -46,4 +46,8 @@ interface PPB_NaCl_Private_0_7 {
    * returns a posix handle to that temporary file.
    */
   PP_FileHandle CreateTemporaryFile([in] PP_Instance instance);
+
+  /* Return true if we are off the record.
+   */
+  PP_Bool IsOffTheRecord([in] PP_Instance instance);
 };