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diff --git a/ppapi/cpp/module.h b/ppapi/cpp/module.h
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+++ b/ppapi/cpp/module.h
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+// Copyright (c) 2010 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 PPAPI_CPP_MODULE_H_
+#define PPAPI_CPP_MODULE_H_
+
+#include <map>
+#include <string>
+
+#include "ppapi/c/pp_instance.h"
+#include "ppapi/c/pp_module.h"
+#include "ppapi/c/pp_stdint.h"
+#include "ppapi/c/ppb.h"
+#include "ppapi/c/ppb_core.h"
+#include "ppapi/cpp/core.h"
+
+namespace pp {
+
+class Instance;
+
+class Module {
+ public:
+  // You may not call any other PP functions from the constructor, put them
+  // in Init instead. Various things will not be set up until the constructor
+  // completes.
+  Module();
+  virtual ~Module();
+
+  // Returns the global instance of this module object, or NULL if the module
+  // is not initialized yet.
+  static Module* Get();
+
+  // This function will be automatically called after the object is created.
+  // This is where you can put functions that rely on other parts of the API,
+  // now that the module has been created.
+  virtual bool Init() { return true; }
+
+  // Returns the internal module handle.
+  PP_Module pp_module() const { return pp_module_; }
+
+  // Returns the internal get_browser_interface pointer.
+  // TODO(sehr): This should be removed once the NaCl browser plugin no longer
+  // needs it.
+  PPB_GetInterface get_browser_interface() const {
+    return get_browser_interface_;
+  }
+
+  // Returns the core interface for doing basic global operations. This is
+  // guaranteed to be non-NULL once the module has successfully initialized
+  // and during the Init() call.
+  //
+  // It will be NULL before Init() has been called.
+  Core* core() { return core_; }
+
+  // Implements GetInterface for the browser to get plugin interfaces. If you
+  // need to provide your own implementations of new interfaces, you can use
+  // AddPluginInterface which this function will use.
+  const void* GetPluginInterface(const char* interface_name);
+
+  // Returns an interface in the browser.
+  const void* GetBrowserInterface(const char* interface_name);
+
+  // Returns the object associated with this PP_Instance, or NULL if one is
+  // not found.
+  Instance* InstanceForPPInstance(PP_Instance instance);
+
+  // Adds a handler for a given interface name. When the browser requests
+  // that interface name, the given |vtable| will be returned.
+  //
+  // In general, plugins will not need to call this directly. Instead, the
+  // C++ wrappers for each interface will register themselves with this
+  // function.
+  //
+  // This function may be called more than once with the same interface name
+  // and vtable with no effect. However, it may not be used to register a
+  // different vtable for an already-registered interface. It will assert for
+  // a different registration for an already-registered interface in debug
+  // mode, and just ignore the registration in release mode.
+  void AddPluginInterface(const std::string& interface_name,
+                          const void* vtable);
+
+  // Sets the browser interface and calls the regular init function that
+  // can be overridden by the base classes.
+  //
+  // TODO(brettw) make this private when I can figure out how to make the
+  // initialize function a friend.
+  bool InternalInit(PP_Module mod,
+                    PPB_GetInterface get_browser_interface);
+
+ protected:
+  // Override to create your own plugin type.
+  virtual Instance* CreateInstance(PP_Instance instance) = 0;
+
+ private:
+  friend bool Instance_DidCreate(PP_Instance pp_instance,
+                                 uint32_t argc,
+                                 const char* argn[],
+                                 const char* argv[]);
+  friend void Instance_DidDestroy(PP_Instance instance);
+
+  // Unimplemented (disallow copy and assign).
+  Module(const Module&);
+  Module& operator=(const Module&);
+
+  // Instance tracking.
+  typedef std::map<PP_Instance, Instance*> InstanceMap;
+  InstanceMap current_instances_;
+
+  PP_Module pp_module_;
+  PPB_GetInterface get_browser_interface_;
+
+  Core* core_;
+
+  // All additional interfaces this plugin can handle as registered by
+  // AddPluginInterface.
+  typedef std::map<std::string, const void*> InterfaceMap;
+  InterfaceMap additional_interfaces_;
+};
+
+}  // namespace pp
+
+#endif  // PPAPI_CPP_MODULE_H_