Fix up some types in the API.

ppapi/c/ppb_url_loader.h

 /* 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.
  */
 #ifndef PPAPI_C_PPB_URL_LOADER_H_
 #define PPAPI_C_PPB_URL_LOADER_H_
 
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_resource.h"
@@ skipping 78 matching lines @@
                                  int64_t* total_bytes_to_be_received);
 
   // Returns the current URLResponseInfo object.
   PP_Resource (*GetResponseInfo)(PP_Resource loader);
 
   // Call this method to read the response body.  The size of the buffer must
   // be large enough to hold the specified number of bytes to read.  May
   // perform a partial read.  Returns the number of bytes read or an error
   // code.
   int32_t (*ReadResponseBody)(PP_Resource loader,
-                              char* buffer,
+                              void* buffer,
                               int32_t bytes_to_read,
                               struct PP_CompletionCallback callback);
 
   // If PP_URLREQUESTPROPERTY_STREAMTOFILE was set on the URLRequestInfo passed
   // to the Open method, then this method may be used to wait for the response
   // body to be completely downloaded to the file provided by URLResponseInfo's
   // GetBody method.
   int32_t (*FinishStreamingToFile)(PP_Resource loader,
                                    struct PP_CompletionCallback callback);
 
   // Cancels any IO that may be pending, and closes the URLLoader object.  Any
   // pending callbacks will still run, reporting PP_ERROR_ABORTED if pending IO
   // was interrupted.  It is NOT valid to call Open again after a call to this
   // method.  Note: If the URLLoader object is destroyed, and it is still open,
   // then it will be implicitly closed, so you are not required to call the
   // Close method.
   void (*Close)(PP_Resource loader);
 };
 /**
  * @}
  */
 
 #endif  /* PPAPI_C_PPB_URL_LOADER_H_ */