Implemented shared memory as an NPObject.

o3d/gpu_plugin/np_utils/np_browser_stub.h

 // Copyright (c) 2006-2008 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 O3D_GPU_PLUGIN_NP_UTILS_NP_BROWSER_STUB_H_
 #define O3D_GPU_PLUGIN_NP_UTILS_NP_BROWSER_STUB_H_
 
 #include <set>
 #include <string>
 
@@ skipping 49 matching lines @@
                            NPIdentifier name);
   virtual bool Invoke(NPP npp,
                       NPObject* object,
                       NPIdentifier name,
                       const NPVariant* args,
                       uint32_t num_args,
                       NPVariant* result);
 
   virtual NPObject* GetWindowNPObject(NPP npp);
 
-  // Chromium specific additions.
-  virtual NPSharedMemory* MapSharedMemory(NPP id,
-                                          NPObject* object,
-                                          size_t size,
-                                          bool read_only);
-
-  virtual void UnmapSharedMemory(NPP id,
-                                 NPSharedMemory* shared_memory);
-
  private:
   DISALLOW_COPY_AND_ASSIGN(StubNPBrowser);
 };
 
 }  // namespace gpu_plugin
 }  // namespace o3d
 
 #endif  // O3D_GPU_PLUGIN_NP_UTILS_NP_BROWSER_STUB_H_