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 218 matching lines @@
    * injection only to avoid the linkage problems that occur because the NaCl
    * plugin is built as a separate DLL/DSO
    * (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 for a url for pnacl translator tools,
-   * or an invalid handle on failure.
+  /* Returns a read-only (but executable) file descriptor / file info for
+   * a url for pnacl translator tools. Returns an invalid handle on failure.
    */
-  PP_FileHandle GetReadonlyPnaclFd([in] str_t url);
+  void GetReadExecPnaclFd([in] str_t url,
+                          [out] PP_NaClFileInfo out_file_info);
 
   /* 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 176 matching lines @@
    * process, we consult our internal pnacl.json instead of the user-supplied
    * NMF.
    * Fails for files which require PNaCl translation.
    */
   void OpenManifestEntry([in] PP_Instance instance,
                          [in] PP_Bool is_helper_process,
                          [in] str_t key,
                          [out] PP_NaClFileInfo file_info,
                          [in] PP_CompletionCallback callback);
 };