Delete the PNaCl translate thread before deleting object files on surfaway.

ppapi/native_client/src/trusted/plugin/pnacl_coordinator.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 NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PNACL_COORDINATOR_H_
 #define NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PNACL_COORDINATOR_H_
 
 #include <set>
 #include <map>
 #include <vector>
@@ skipping 216 matching lines @@
   // was already run/consumed.
   bool error_already_reported_;
 
   // State for timing and size information for UMA stats.
   int64_t pnacl_init_time_;
   int64_t pexe_size_;  // Count as we stream -- will converge to pexe size.
   int64_t pexe_bytes_compiled_;  // Count as we compile.
   int64_t expected_pexe_size_;   // Expected download total (-1 if unknown).
 
   // The helper thread used to do translations via SRPC.
-  // Keep this last in declaration order to ensure the other variables
-  // haven't been destroyed yet when its destructor runs.
+  // It accesses fields of PnaclCoordinator so it must have a
+  // shorter lifetime.
   nacl::scoped_ptr<PnaclTranslateThread> translate_thread_;
 };
 
 //----------------------------------------------------------------------
 
 }  // namespace plugin;
 #endif  // NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PNACL_COORDINATOR_H_