diff -r 000000000000 -r 6474c204b198 dom/plugins/base/nsPluginsDir.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/plugins/base/nsPluginsDir.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,75 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsPluginsDir_h_
+#define nsPluginsDir_h_
+
+#include "nsError.h"
+#include "nsIFile.h"
+
+/**
+ * nsPluginsDir is nearly obsolete. Directory Service should be used instead.
+ * It exists for the sake of one static function.
+ */
+
+class nsPluginsDir {
+public:
+	/**
+	 * Determines whether or not the given file is actually a plugin file.
+	 */
+	static bool IsPluginFile(nsIFile* file);
+};
+
+struct PRLibrary;
+
+struct nsPluginInfo {
+	char* fName;				// name of the plugin
+	char* fDescription;			// etc.
+	uint32_t fVariantCount;
+	char** fMimeTypeArray;
+	char** fMimeDescriptionArray;
+	char** fExtensionArray;
+	char* fFileName;
+	char* fFullPath;
+	char* fVersion;
+};
+
+/**
+ * Provides cross-platform access to a plugin file. Deals with reading
+ * properties from the plugin file, and loading the plugin's shared
+ * library. Insulates core nsIPluginHost implementations from these
+ * details.
+ */
+class nsPluginFile {
+  PRLibrary* pLibrary;
+  nsCOMPtr<nsIFile> mPlugin;
+public:
+	/**
+	 * If spec corresponds to a valid plugin file, constructs a reference
+	 * to a plugin file on disk. Plugins are typically located using the
+	 * nsPluginsDir class.
+	 */
+	nsPluginFile(nsIFile* spec);
+	virtual ~nsPluginFile();
+
+	/**
+	 * Loads the plugin into memory using NSPR's shared-library loading
+	 * mechanism. Handles platform differences in loading shared libraries.
+	 */
+	nsresult LoadPlugin(PRLibrary **outLibrary);
+
+	/**
+	 * Obtains all of the information currently available for this plugin.
+	 * Has a library outparam which will be non-null if a library load was required.
+	 */
+	nsresult GetPluginInfo(nsPluginInfo &outPluginInfo, PRLibrary **outLibrary);
+
+  /**
+	 * Should be called after GetPluginInfo to free all allocated stuff
+	 */
+	nsresult FreePluginInfo(nsPluginInfo &PluginInfo);
+};
+
+#endif /* nsPluginsDir_h_ */