NaCl: enable meta-based validation for shared libraries.

chrome/nacl/nacl_validation_query.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.
 
 #ifndef CHROME_NACL_NACL_VALIDATION_QUERY_H_
 #define CHROME_NACL_NACL_VALIDATION_QUERY_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/strings/string_piece.h"
 #include "crypto/hmac.h"
 
+struct NaClFileToken;
 struct NaClValidationCache;
 class NaClValidationDB;
 class NaClValidationQuery;
 
 class NaClValidationQueryContext {
  public:
   NaClValidationQueryContext(NaClValidationDB* db,
                              const std::string& profile_key,
                              const std::string& nacl_version);
 
   NaClValidationQuery* CreateQuery();
 
+  bool ResolveFileToken(struct NaClFileToken* file_token, int32* fd,
+                        std::string* path);
+
  private:
   NaClValidationDB* db_;
 
   // A key used by HMAC that is specific to this installation of Chrome.
   std::string profile_key_;
 
   // Bytes indicating the "version" of the validator being used.  This is used
   // to implicitly invalidate the cache - changing the version will change the
   // hashes that are produced.
   std::string nacl_version_;
@@ skipping 45 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(NaClValidationQuery);
 };
 
 // Create a validation cache interface for use by sel_ldr.
 struct NaClValidationCache* CreateValidationCache(
     NaClValidationDB* db, const std::string& profile_key,
     const std::string& nacl_version);
 
 #endif  // CHROME_NACL_NACL_VALIDATION_QUERY_H_