Add a flag to LaunchSelLdr to skip grabbing a routing_id.

ppapi/c/private/ppb_nacl_private.h

Index: ppapi/c/private/ppb_nacl_private.h
diff --git a/ppapi/c/private/ppb_nacl_private.h b/ppapi/c/private/ppb_nacl_private.h
index 57941641b671d2a09d0b33d7caa2ea06eab1f1c2..5a4e2bf6368b9d95b867313cc275595d9615359c 100644
--- a/ppapi/c/private/ppb_nacl_private.h
+++ b/ppapi/c/private/ppb_nacl_private.h
@@ -3,7 +3,7 @@
  * found in the LICENSE file.
  */
 
-/* From private/ppb_nacl_private.idl modified Tue Nov 20 08:49:26 2012. */
+/* From private/ppb_nacl_private.idl modified Thu Nov 29 15:01:09 2012. */
 
 #ifndef PPAPI_C_PRIVATE_PPB_NACL_PRIVATE_H_
 #define PPAPI_C_PRIVATE_PPB_NACL_PRIVATE_H_
@@ -56,10 +56,14 @@ struct PPB_NaCl_Private_1_0 {
   /* Launches NaCl's sel_ldr process.  Returns PP_NACL_OK on success and writes
    * |socket_count| nacl::Handles to imc_handles. Returns PP_NACL_FAILED on
    * failure. The |enable_ppapi_dev| parameter controls whether GetInterface
-   * returns 'Dev' interfaces to the NaCl plugin.
+   * returns 'Dev' interfaces to the NaCl plugin.  The |uses_ppapi| flag
+   * indicates that the nexe run by sel_ldr will use the PPAPI APIs.
+   * This implies that LaunchSelLdr is run from the main thread.  If a nexe
+   * does not need PPAPI, then it can run off the main thread.
    */
   PP_NaClResult (*LaunchSelLdr)(PP_Instance instance,
                                 const char* alleged_url,
+                                PP_Bool uses_ppapi,
                                 PP_Bool enable_ppapi_dev,
                                 int32_t socket_count,
                                 void* imc_handles);