plugins: move NativeLibrary into base.

base/native_library_linux.cc

+// Copyright (c) 2009 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 "base/native_library.h"
+
+#include <dlfcn.h>
+
+#include "base/file_path.h"
+#include "base/logging.h"
+
+namespace base {
+
+// static

[jam, 2009/04/21 00:26:53]

nit: i know some places of the code do it often, but I still think it's
redundant to put "// static" infront of methods.  why not "// private" or "//
public"?!

+NativeLibrary LoadNativeLibrary(const FilePath& library_path) {
+  void* dl = dlopen(library_path.value().c_str(), RTLD_LAZY);
+  if (!dl)
+    NOTREACHED() << "dlopen failed: " << dlerror();
+
+  return dl;
+}
+
+// static
+void UnloadNativeLibrary(NativeLibrary library) {
+  int ret = dlclose(library);
+  if (ret < 0)
+    NOTREACHED() << "dlclose failed: " << dlerror();
+}
+
+// static
+void* GetFunctionPointerFromNativeLibrary(NativeLibrary library,
+                                          NativeLibraryFunctionNameType name) {
+  return dlsym(library, name);
+}
+
+}  // namespace base