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

webkit/plugins/ppapi/ppb_char_set_impl.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_PPB_CHAR_SET_IMPL_H_
 #define WEBKIT_PLUGINS_PPAPI_PPB_CHAR_SET_IMPL_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "ppapi/shared_impl/function_group_base.h"
 #include "ppapi/thunk/ppb_char_set_api.h"
 
 namespace webkit {
 namespace ppapi {
 
 class PluginInstance;
 
 class PPB_CharSet_Impl : public ::ppapi::FunctionGroupBase,
                          public ::ppapi::thunk::PPB_CharSet_FunctionAPI {
  public:
   PPB_CharSet_Impl(PluginInstance* instance);
   virtual ~PPB_CharSet_Impl();
 
   // FunctionGroupBase overrides.
-  virtual ::ppapi::thunk::PPB_CharSet_FunctionAPI* AsCharSet_FunctionAPI();
+  virtual ::ppapi::thunk::PPB_CharSet_FunctionAPI* AsPPB_CharSet_FunctionAPI();
 
   // PPB_CharSet_FunctionAPI implementation.
   virtual char* UTF16ToCharSet(PP_Instance instance,
                                const uint16_t* utf16, uint32_t utf16_len,
                                const char* output_char_set,
                                PP_CharSet_ConversionError on_error,
                                uint32_t* output_length) OVERRIDE;
   virtual uint16_t* CharSetToUTF16(PP_Instance instance,
                                    const char* input, uint32_t input_len,
                                    const char* input_char_set,
                                    PP_CharSet_ConversionError on_error,
                                    uint32_t* output_length) OVERRIDE;
   virtual PP_Var GetDefaultCharSet(PP_Instance instance) OVERRIDE;
 
  private:
   PluginInstance* instance_;
 
   DISALLOW_COPY_AND_ASSIGN(PPB_CharSet_Impl);
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_PPB_CHAR_SET_IMPL_H_