Do PPB_FileIO Query and Read in the plugin process.

content/renderer/pepper/pepper_file_io_host.h

Index: content/renderer/pepper/pepper_file_io_host.h
diff --git a/content/renderer/pepper/pepper_file_io_host.h b/content/renderer/pepper/pepper_file_io_host.h
index ddc6f41b9323df9316c0c6fe2d4bf4a88d706820..1680406f14428f82332bb45b30936e64947eef1d 100644
--- a/content/renderer/pepper/pepper_file_io_host.h
+++ b/content/renderer/pepper/pepper_file_io_host.h
@@ -59,13 +59,9 @@ class PepperFileIOHost : public ppapi::host::ResourceHost,
   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);