Refactor FileIO to the new resource host system.

content/renderer/pepper/content_renderer_pepper_host_factory.cc

Index: content/renderer/pepper/content_renderer_pepper_host_factory.cc
===================================================================
--- content/renderer/pepper/content_renderer_pepper_host_factory.cc	(revision 177698)
+++ content/renderer/pepper/content_renderer_pepper_host_factory.cc	(working copy)
@@ -7,6 +7,7 @@
 #include "base/logging.h"
 #include "content/renderer/pepper/pepper_audio_input_host.h"
 #include "content/renderer/pepper/pepper_file_chooser_host.h"
+#include "content/renderer/pepper/pepper_file_io_host.h"
 #include "content/renderer/pepper/pepper_flash_clipboard_host.h"
 #include "content/renderer/pepper/pepper_graphics_2d_host.h"
 #include "content/renderer/pepper/pepper_video_capture_host.h"
@@ -54,6 +55,9 @@
     case PpapiHostMsg_WebSocket_Create::ID:
       return scoped_ptr<ResourceHost>(new PepperWebSocketHost(
           host_, instance, params.pp_resource()));
+    case PpapiHostMsg_FileIO_Create::ID:
+      return scoped_ptr<ResourceHost>(new PepperFileIOHost(
+          host_, instance, params.pp_resource()));
   }
 
   // Dev interfaces.