plugins: move NativeLibrary into base.

chrome/plugin/plugin_thread.h

Index: chrome/plugin/plugin_thread.h
diff --git a/chrome/plugin/plugin_thread.h b/chrome/plugin/plugin_thread.h
index 9b999e28340f1ed5e0f6ef40287a886858f8dded..a110a2cd277160551395d042443b8e51f7192a0a 100644
--- a/chrome/plugin/plugin_thread.h
+++ b/chrome/plugin/plugin_thread.h
@@ -6,6 +6,7 @@
 #define CHROME_PLUGIN_PLUGIN_THREAD_H_
 
 #include "base/file_path.h"
+#include "base/native_library.h"
 #include "chrome/common/child_thread.h"
 #include "chrome/plugin/plugin_channel.h"
 
@@ -35,7 +36,7 @@ class PluginThread : public ChildThread {
   scoped_ptr<NotificationService> notification_service_;
 
   // The plugin module which is preloaded in Init
-  HMODULE preloaded_plugin_module_;
+  base::NativeLibrary preloaded_plugin_module_;
 
   // Points to the plugin file that this process hosts.
   FilePath plugin_path_;