Remove unused in-process pepper APIs

ppapi/proxy/resource_creation_proxy.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 PPAPI_PROXY_RESOURCE_CREATION_PROXY_H_
 #define PPAPI_PROXY_RESOURCE_CREATION_PROXY_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 155 matching lines @@
   PP_Resource CreateBuffer(PP_Instance instance, uint32_t size) override;
   PP_Resource CreateFlashDRM(PP_Instance instance) override;
   PP_Resource CreateFlashFontFile(
       PP_Instance instance,
       const PP_BrowserFont_Trusted_Description* description,
       PP_PrivateFontCharset charset) override;
   PP_Resource CreateFlashMenu(PP_Instance instance,
                               const PP_Flash_Menu* menu_data) override;
   PP_Resource CreateFlashMessageLoop(PP_Instance instance) override;
   PP_Resource CreatePlatformVerificationPrivate(PP_Instance instance) override;
-  PP_Resource CreateScrollbar(PP_Instance instance,
-                              PP_Bool vertical) override;
   PP_Resource CreateVideoCapture(PP_Instance instance) override;
   PP_Resource CreateVideoDecoderDev(
       PP_Instance instance,
       PP_Resource context3d_id,
       PP_VideoDecoder_Profile profile) override;
 #endif  // !defined(OS_NACL)
 
   bool Send(IPC::Message* msg) override;
   bool OnMessageReceived(const IPC::Message& msg) override;
 
  private:
   Connection GetConnection();
   DISALLOW_COPY_AND_ASSIGN(ResourceCreationProxy);
 };
 
 }  // namespace proxy
 }  // namespace ppapi
 
 #endif  // PPAPI_PROXY_RESOURCE_CREATION_PROXY_H_