Moving the ViewHostMsg_PDFHasUnsupportedFeature IPC message to Chrome as PDF is a chrome specific

webkit/plugins/ppapi/plugin_delegate.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 WEBKIT_PLUGINS_PPAPI_PLUGIN_DELEGATE_H_
 #define WEBKIT_PLUGINS_PPAPI_PLUGIN_DELEGATE_H_
 
 #include <string>
 
 #include "base/callback_old.h"
@@ skipping 400 matching lines @@
   // this will return an empty string.
   virtual std::string ResolveProxy(const GURL& url) = 0;
 
   // Tell the browser when resource loading starts/ends.
   virtual void DidStartLoading() = 0;
   virtual void DidStopLoading() = 0;
 
   // Sets restrictions on how the content can be used (i.e. no print/copy).
   virtual void SetContentRestriction(int restrictions) = 0;
 
-  // Tells the browser that the PDF has an unsupported feature.
-  virtual void HasUnsupportedFeature() = 0;
-
   // Tells the browser to bring up SaveAs dialog to save specified URL.
   virtual void SaveURLAs(const GURL& url) = 0;
 
   // Socket dispatcher for P2P connections. Returns to NULL if P2P API
   // is disabled.
   //
   // TODO(sergeyu): Stop using GetP2PSocketDispatcher() in remoting
   // client and remove it from here.
   virtual P2PSocketDispatcher* GetP2PSocketDispatcher() = 0;
 
@@ skipping 11 matching lines @@
   virtual base::SharedMemory* CreateAnonymousSharedMemory(uint32_t size) = 0;
 
   // Returns the current preferences.
   virtual ::ppapi::Preferences GetPreferences() = 0;
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_PLUGIN_DELEGATE_H_