Add sandbox ISA and extra compile flag fields to PNaCl translation cache key

ppapi/api/private/ppb_nacl_private.idl

 /* 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.
  */
 
 /* This file contains NaCl private interfaces. This interface is not versioned
  * and is for internal Chrome use. It may change without notice. */
 
 label Chrome {
   M25 = 1.0
@@ skipping 116 matching lines @@
    * the association between the cache key and the fd, and copy the
    * nexe into the cache after the translation finishes.
    */
   int32_t GetNexeFd([in] PP_Instance instance,
                     [in] str_t pexe_url,
                     [in] uint32_t abi_version,
                     [in] uint32_t opt_level,
                     [in] str_t last_modified,
                     [in] str_t etag,
                     [in] PP_Bool has_no_store_header,
+                    [in] str_t sandbox_isa,
+                    [in] str_t extra_flags,
                     [out] PP_Bool is_hit,
                     [out] PP_FileHandle nexe_handle,
                     [in] PP_CompletionCallback callback);
 
   /* Report to the browser that translation of the pexe for |instance|
    * has finished, or aborted with an error. If |success| is true, the
    * browser may then store the translation in the cache. The renderer
    * must first have called GetNexeFd for the same instance. (The browser is
    * not guaranteed to store the nexe even if |success| is true; if there is
    * an error on the browser side, or the file is too big for the cache, or
@@ skipping 27 matching lines @@
                      [in] uint64_t loaded_bytes,
                      [in] uint64_t total_bytes);
 
   /* Sets a read-only property on the <embed> DOM element that corresponds to
    * the given instance.
    */
   void SetReadOnlyProperty([in] PP_Instance instance,
                            [in] PP_Var key,
                            [in] PP_Var value);
 };