Block NPAPI plugins by default

content/public/browser/plugin_service.h

 // Copyright (c) 2012 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.
 
 #ifndef CONTENT_PUBLIC_BROWSER_PLUGIN_SERVICE_H_
 #define CONTENT_PUBLIC_BROWSER_PLUGIN_SERVICE_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 125 matching lines @@
   // on the path from the version info previously registered.
   virtual void UnregisterInternalPlugin(const base::FilePath& path) = 0;
 
   // Gets a list of all the registered internal plugins.
   virtual void GetInternalPlugins(std::vector<WebPluginInfo>* plugins) = 0;
 
   // Returns true iff NPAPI plugins are supported on the current platform.
   // This can be called from any thread.
   virtual bool NPAPIPluginsSupported() = 0;
 
+#if defined(OS_WIN) || defined(OS_MACOSX)
+  // This is equivalent to specifying kEnableNpapi, but is useful for unittests.
+  virtual void EnableNpapiPluginsForTesting() = 0;
+#endif
+
   // This is equivalent to specifying kDisablePluginsDiscovery, but is useful
   // for unittests.
   virtual void DisablePluginsDiscoveryForTesting() = 0;
 
 #if defined(OS_MACOSX)
   // Called when the application is made active so that modal plugin windows can
   // be made forward too.
   virtual void AppActivated() = 0;
 #elif defined(OS_WIN)
   // Returns the name and version of a plugin HWND. If the HWND isn't a valid
   // plugin, returns false.
   // This can be called from any thread.
   virtual bool GetPluginInfoFromWindow(HWND window,
                                        base::string16* plugin_name,
                                        base::string16* plugin_version) = 0;
 #endif
 
   // Returns true iff PPAPI "dev channel" methods are supported.
   virtual bool PpapiDevChannelSupported(BrowserContext* browser_context,
                                         const GURL& document_url) = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_PLUGIN_SERVICE_H_