Fix up some types in the API.

ppapi/cpp/url_loader.cc

 // Copyright (c) 2010 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.
 
 #include "ppapi/cpp/url_loader.h"
 
 #include "ppapi/c/ppb_url_loader.h"
 #include "ppapi/c/pp_errors.h"
 #include "ppapi/cpp/common.h"
 #include "ppapi/cpp/completion_callback.h"
@@ skipping 70 matching lines @@
 }
 
 URLResponseInfo URLLoader::GetResponseInfo() const {
   if (!has_interface<PPB_URLLoader>())
     return URLResponseInfo();
   return URLResponseInfo(URLResponseInfo::PassRef(),
                          get_interface<PPB_URLLoader>()->GetResponseInfo(
                              pp_resource()));
 }
 
-int32_t URLLoader::ReadResponseBody(char* buffer,
+int32_t URLLoader::ReadResponseBody(void* buffer,
                                     int32_t bytes_to_read,
                                     const CompletionCallback& cc) {
   if (!has_interface<PPB_URLLoader>())
     return PP_ERROR_NOINTERFACE;
   return get_interface<PPB_URLLoader>()->ReadResponseBody(
       pp_resource(), buffer, bytes_to_read, cc.pp_completion_callback());
 }
 
 int32_t URLLoader::FinishStreamingToFile(const CompletionCallback& cc) {
   if (!has_interface<PPB_URLLoader>())
     return PP_ERROR_NOINTERFACE;
   return get_interface<PPB_URLLoader>()->FinishStreamingToFile(
       pp_resource(), cc.pp_completion_callback());
 }
 
 void URLLoader::Close() {
   if (!has_interface<PPB_URLLoader>())
     return;
   get_interface<PPB_URLLoader>()->Close(pp_resource());
 }
 
 }  // namespace pp