Convert more interfaces to the new thunk system. This goes up to and including

ppapi/thunk/ppb_find_api.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 PPAPI_THUNK_PPB_FIND_API_H_
 #define PPAPI_THUNK_PPB_FIND_API_H_
 
 #include "ppapi/c/dev/ppb_find_dev.h"
 #include "ppapi/proxy/interface_id.h"
 
 namespace ppapi {
 namespace thunk {
 
 class PPB_Find_FunctionAPI {
  public:
   static const ::pp::proxy::InterfaceID interface_id =
       ::pp::proxy::INTERFACE_ID_PPB_FIND;
 
   virtual void NumberOfFindResultsChanged(PP_Instance instance,
                                           int32_t total,
                                           PP_Bool final_result) = 0;
   virtual void SelectedFindResultChanged(PP_Instance instance,
                                          int32_t index) = 0;
 };
 
 }  // namespace thunk
 }  // namespace ppapi
 
 #endif  // PPAPI_THUNK_PPB_FIND_API_H_