Enable mmap and identity-based validation caching on pnacl-{llc,ld}.nexe

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 185 matching lines @@
    * (see http://code.google.com/p/chromium/issues/detail?id=114439#c8).
    */
   int32_t BrokerDuplicateHandle([in] PP_FileHandle source_handle,
                                 [in] uint32_t process_id,
                                 [out] PP_FileHandle target_handle,
                                 [in] uint32_t desired_access,
                                 [in] uint32_t options);
 
   /* Returns a read-only file descriptor of a file rooted in the Pnacl
    * component directory, or an invalid handle on failure.
+   * The metadata |file_token_*| are 0 on failure.
    */
-  PP_FileHandle GetReadonlyPnaclFd([in] str_t filename);
+  PP_FileHandle GetReadonlyPnaclFd([in] str_t filename,
+                                   [in] PP_Bool is_executable,
+                                   [out] uint64_t file_token_lo,
+                                   [out] uint64_t file_token_hi);
 
   /* This creates a temporary file that will be deleted by the time
    * the last handle is closed (or earlier on POSIX systems), and
    * returns a posix handle to that temporary file.
    */
   PP_FileHandle CreateTemporaryFile([in] PP_Instance instance);
 
   /* Return the number of processors in the system as reported by the OS */
   int32_t GetNumberOfProcessors();
 
@@ skipping 29 matching lines @@
    * 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
    * the browser is in incognito mode, no notification will be delivered to
    * the plugin.)
    */
   void ReportTranslationFinished([in] PP_Instance instance,
                                  [in] PP_Bool success);
 
   /* Opens a NaCl executable file in the application's extension directory
    * corresponding to the file URL and returns a file descriptor, or an invalid
-   * handle on failure. |metadata| is left unchanged on failure.
+   * handle on failure. The metadata |file_token*| are 0 on failure.
    */
   PP_FileHandle OpenNaClExecutable([in] PP_Instance instance,
                                    [in] str_t file_url,
                                    [out] uint64_t file_token_lo,
                                    [out] uint64_t file_token_hi);
 
 
   /* Dispatch a progress event on the DOM element where the given instance is
    * embedded.
    */
@@ skipping 87 matching lines @@
   /* Sets the time the plugin was initialized. */
   void SetInitTime([in] PP_Instance instance);
 
   /* Returns the size of the nexe. */
   int64_t GetNexeSize([in] PP_Instance instance);
 
   /* Sets the size of the nexe. */
   void SetNexeSize([in] PP_Instance instance,
                    [in] int64_t nexe_size);
 };