Do PPB_FileIO Query and Read in the plugin process.

content/renderer/pepper/pepper_file_io_host.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 CONTENT_RENDERER_PEPPER_PEPPER_FILE_IO_HOST_H_
 #define CONTENT_RENDERER_PEPPER_PEPPER_FILE_IO_HOST_H_
 
 #include <set>
 #include <string>
 
@@ skipping 90 matching lines @@
   void ExecutePlatformQueryCallback(ReplyMessageContext reply_context,
                                     base::PlatformFileError error_code,
                                     const base::PlatformFileInfo& file_info);
   void ExecutePlatformReadCallback(ReplyMessageContext reply_context,
                                    base::PlatformFileError error_code,
                                    const char* data, int bytes_read);
   void ExecutePlatformWriteCallback(ReplyMessageContext reply_context,
                                     base::PlatformFileError error_code,
                                     int bytes_written);
 
+  RendererPpapiHost* renderer_ppapi_host_;
+
   base::PlatformFile file_;
 
   // The file system type specified in the Open() call. This will be
   // PP_FILESYSTEMTYPE_INVALID before open was called. This value does not
   // indicate that the open command actually succeeded.
   PP_FileSystemType file_system_type_;
 
   // Valid only for PP_FILESYSTEMTYPE_LOCAL{PERSISTENT,TEMPORARY}.
   GURL file_system_url_;
 
@@ skipping 21 matching lines @@
       AsyncOpenFileCallback;
 
   IDMap<AsyncOpenFileCallback> pending_async_open_files_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperFileIOHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_FILE_IO_HOST_H_