linux: don't always print dlopen errors from LoadNativeLibrary

base/native_library_win.cc

Index: base/native_library_win.cc
diff --git a/base/native_library_win.cc b/base/native_library_win.cc
index b77fbe13cdc61c3c850d4784f94573dcbb4e7347..af00cd1133d579b4227ddbe1c0001e8031280a83 100644
--- a/base/native_library_win.cc
+++ b/base/native_library_win.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2009 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.
 
@@ -39,7 +39,8 @@ NativeLibrary LoadNativeLibraryHelper(const FilePath& library_path,
 }
 
 // static
-NativeLibrary LoadNativeLibrary(const FilePath& library_path) {
+NativeLibrary LoadNativeLibrary(const FilePath& library_path,
+                                std::string* error) {
   return LoadNativeLibraryHelper(library_path, LoadLibraryW);
 }