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 21 matching lines @@
 
   // ppapi::host::ResourceHost override.
   virtual int32_t OnResourceMessageReceived(
       const IPC::Message& msg,
       ppapi::host::HostMessageContext* context) OVERRIDE;
 
  private:
   int32_t OnHostMsgOpen(ppapi::host::HostMessageContext* context,
                         PP_Resource file_ref_resource,
                         int32_t open_flags);
-  int32_t OnHostMsgQuery(ppapi::host::HostMessageContext* context);
   int32_t OnHostMsgTouch(ppapi::host::HostMessageContext* context,
                          PP_Time last_access_time,
                          PP_Time last_modified_time);
-  int32_t OnHostMsgRead(ppapi::host::HostMessageContext* context,
-                        int64_t offset,
-                        int32_t bytes_to_read);
   int32_t OnHostMsgWrite(ppapi::host::HostMessageContext* context,
                          int64_t offset,
                          const std::string& buffer);
   int32_t OnHostMsgSetLength(ppapi::host::HostMessageContext* context,
                              int64_t length);
   int32_t OnHostMsgClose(ppapi::host::HostMessageContext* context);
   int32_t OnHostMsgFlush(ppapi::host::HostMessageContext* context);
   // Private API.
   int32_t OnHostMsgRequestOSFileHandle(
       ppapi::host::HostMessageContext* context);
@@ skipping 14 matching lines @@
                                       base::PlatformFileError error_code);
   void ExecutePlatformOpenFileCallback(ReplyMessageContext reply_context,
                                        base::PlatformFileError error_code,
                                        base::PassPlatformFile file);
   void ExecutePlatformOpenFileSystemURLCallback(
       ReplyMessageContext reply_context,
       base::PlatformFileError error_code,
       base::PassPlatformFile file,
       quota::QuotaLimitType quota_policy,
       const PluginDelegate::NotifyCloseFileCallback& callback);
-  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_;
+
   // TODO(victorhsieh): eliminate plugin_delegate_ as it's no longer needed.
   PluginDelegate* plugin_delegate_;  // Not owned.
 
   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_;
 
@@ skipping 17 matching lines @@
   base::WeakPtrFactory<PepperFileIOHost> weak_factory_;
 
   ppapi::FileIOStateManager state_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperFileIOHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_FILE_IO_HOST_H_