Moved the following IPC messages used by the chrome NPAPI plugin installer out of content

content/renderer/webplugin_delegate_proxy.h

 // Copyright (c) 2011 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_WEBPLUGIN_DELEGATE_PROXY_H_
 #define CONTENT_RENDERER_WEBPLUGIN_DELEGATE_PROXY_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 96 matching lines @@
                                     int notify_id);
 
   virtual void DidReceiveManualResponse(const GURL& url,
                                         const std::string& mime_type,
                                         const std::string& headers,
                                         uint32 expected_length,
                                         uint32 last_modified);
   virtual void DidReceiveManualData(const char* buffer, int length);
   virtual void DidFinishManualLoading();
   virtual void DidManualLoadFail();
-  virtual void InstallMissingPlugin();
   virtual webkit::npapi::WebPluginResourceClient* CreateResourceClient(
       unsigned long resource_id, const GURL& url, int notify_id);
   virtual webkit::npapi::WebPluginResourceClient* CreateSeekableResourceClient(
       unsigned long resource_id, int range_request_id);
 
   gfx::PluginWindowHandle GetPluginWindowHandle();
 
  protected:
   template<class WebPluginDelegateProxy> friend class DeleteTask;
   virtual ~WebPluginDelegateProxy();
@@ skipping 18 matching lines @@
   void OnHandleURLRequest(const PluginHostMsg_URLRequest_Params& params);
   void OnCancelResource(int id);
   void OnInvalidateRect(const gfx::Rect& rect, bool allow_buffer_flipping);
   void OnGetWindowScriptNPObject(int route_id, bool* success);
   void OnGetPluginElement(int route_id, bool* success);
   void OnSetCookie(const GURL& url,
                    const GURL& first_party_for_cookies,
                    const std::string& cookie);
   void OnGetCookies(const GURL& url, const GURL& first_party_for_cookies,
                     std::string* cookies);
-  void OnMissingPluginStatus(int status);
   void OnCancelDocumentLoad();
   void OnInitiateHTTPRangeRequest(const std::string& url,
                                   const std::string& range_info,
                                   int range_request_id);
   void OnDeferResourceLoading(unsigned long resource_id, bool defer);
 
 #if defined(OS_MACOSX)
   void OnFocusChanged(bool focused);
   void OnStartIme();
   void OnBindFakePluginWindowHandle(bool opaque);
@@ skipping 134 matching lines @@
   // back-buffer.
   gfx::Rect front_buffer_diff_;
 
   // The url of the main frame hosting the plugin.
   GURL page_url_;
 
   DISALLOW_COPY_AND_ASSIGN(WebPluginDelegateProxy);
 };
 
 #endif  // CONTENT_RENDERER_WEBPLUGIN_DELEGATE_PROXY_H_