Remove support for NPObjects.

content/renderer/npapi/plugin_channel_host.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_RENDERER_NPAPI_PLUGIN_CHANNEL_HOST_H_
 #define CONTENT_RENDERER_NPAPI_PLUGIN_CHANNEL_HOST_H_
 
 #include "base/containers/hash_tables.h"
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "content/child/npapi/np_channel_base.h"
 #include "ipc/ipc_channel_handle.h"
 
 namespace content {
-class NPObjectBase;
-
 // Encapsulates an IPC channel between the renderer and one plugin process.
 // On the plugin side there's a corresponding PluginChannel.
 class PluginChannelHost : public NPChannelBase {
  public:
 #if defined(OS_MACOSX)
   // TODO(shess): Debugging for http://crbug.com/97285 .  See comment
   // in plugin_channel_host.cc.
   static bool* GetRemoveTrackingFlag();
 #endif
   static PluginChannelHost* GetPluginChannelHost(
       const IPC::ChannelHandle& channel_handle,
       base::SingleThreadTaskRunner* ipc_task_runner);
 
   bool Init(base::SingleThreadTaskRunner* ipc_task_runner,
             bool create_pipe_now,
             base::WaitableEvent* shutdown_event) override;
 
   int GenerateRouteID() override;
 
-  void AddRoute(int route_id, IPC::Listener* listener,
-                NPObjectBase* npobject);
+  void AddRoute(int route_id, IPC::Listener* listener);
   void RemoveRoute(int route_id);
 
   // NPChannelBase override:
   bool Send(IPC::Message* msg) override;
 
   // IPC::Listener override
   void OnChannelError() override;
 
   static void Broadcast(IPC::Message* message) {
     NPChannelBase::Broadcast(message);
   }
 
   bool expecting_shutdown() { return expecting_shutdown_; }
 
  private:
   // Called on the render thread
   PluginChannelHost();
   ~PluginChannelHost() override;
 
   static NPChannelBase* ClassFactory() { return new PluginChannelHost(); }
 
   bool OnControlMessageReceived(const IPC::Message& message) override;
-  void OnSetException(const std::string& message);
   void OnPluginShuttingDown();
 
   // Keep track of all the registered WebPluginDelegeProxies to
   // inform about OnChannelError
   typedef base::hash_map<int, IPC::Listener*> ProxyMap;
   ProxyMap proxies_;
 
   // True if we are expecting the plugin process to go away - in which case,
   // don't treat it as a crash.
   bool expecting_shutdown_;
 
   DISALLOW_COPY_AND_ASSIGN(PluginChannelHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_NPAPI_PLUGIN_CHANNEL_HOST_H_