linux: don't always print dlopen errors from LoadNativeLibrary

chrome/nacl/nacl_main_platform_delegate_mac.mm

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.
 
 #include "chrome/nacl/nacl_main_platform_delegate.h"
 
 #import <Cocoa/Cocoa.h>
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/logging.h"
 #include "base/native_library.h"
@@ skipping 28 matching lines @@
        ii != argstrings.end(); ++ii)
     DVLOG(1) << *ii;
 
   // Be sure not to load the sandbox test DLL if the sandbox isn't on.
   // Comment-out guard and recompile if you REALLY want to test w/out the SB.
   // TODO(jvoung): allow testing without sandbox, but change expected ret vals.
   if (!no_sandbox) {
     FilePath test_dll_name =
       command_line.GetSwitchValuePath(switches::kTestNaClSandbox);
     if (!test_dll_name.empty()) {
-      sandbox_test_module_ = base::LoadNativeLibrary(test_dll_name);
+      sandbox_test_module_ = base::LoadNativeLibrary(test_dll_name, NULL);
       CHECK(sandbox_test_module_);
     }
   }
 }
 
 void NaClMainPlatformDelegate::EnableSandbox() {
   CommandLine* parsed_command_line = CommandLine::ForCurrentProcess();
   SandboxInitWrapper sandbox_wrapper;
   bool sandbox_initialized_ok =
        sandbox_wrapper.InitializeSandbox(*parsed_command_line,
@@ skipping 15 matching lines @@
       result = (*run_security_tests)();
     } else {
       VLOG(1) << "Failed to get NaCl sandbox test function";
       result = false;
     }
     base::UnloadNativeLibrary(sandbox_test_module_);
     sandbox_test_module_ = NULL;
   }
   return result;
 }