Check NaCl debug mask (not just flag) before choosing PNaCl debug URL.

ppapi/c/private/ppb_nacl_private.h

 /* Copyright (c) 2012 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
-/* From private/ppb_nacl_private.idl modified Fri Mar 21 13:55:07 2014. */
+/* From private/ppb_nacl_private.idl modified Wed Mar 26 15:04:54 2014. */
 
 #ifndef PPAPI_C_PRIVATE_PPB_NACL_PRIVATE_H_
 #define PPAPI_C_PRIVATE_PPB_NACL_PRIVATE_H_
 
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_macros.h"
 #include "ppapi/c/pp_stdint.h"
 #include "ppapi/c/pp_var.h"
@@ skipping 264 matching lines @@
   /* Report an error that occured while attempting to load a nexe. */
   void (*ReportLoadError)(PP_Instance instance,
                           PP_NaClError error,
                           const char* error_message,
                           const char* console_message,
                           PP_Bool is_installed);
   /* Performs internal setup when an instance is created. */
   void (*InstanceCreated)(PP_Instance instance);
   /* Performs internal cleanup when an instance is destroyed. */
   void (*InstanceDestroyed)(PP_Instance instance);
-  /* Return true if the NaCl debug stub is enabled and the loaded app
-   * will be attached to a debugger.
+  /* Return true if the NaCl debug stub is enabled and the app loaded from
+   * alleged_nmf_url will be attached to a debugger.
    */
-  PP_Bool (*NaClDebugStubEnabled)(void);
+  PP_Bool (*NaClDebugEnabledForURL)(const char* alleged_nmf_url);
   /* Returns the kind of SFI sandbox implemented by NaCl on this
    * platform.
    */
   const char* (*GetSandboxArch)(void);
   /* Returns the scheme type for a given url. */
   PP_UrlSchemeType (*GetUrlScheme)(struct PP_Var url);
   /* Logs the message to the console. */
   void (*LogToConsole)(PP_Instance instance, const char* message);
 };
 
 typedef struct PPB_NaCl_Private_1_0 PPB_NaCl_Private;
 /**
  * @}
  */
 
 #endif  /* PPAPI_C_PRIVATE_PPB_NACL_PRIVATE_H_ */