Cleanup: Remove src/trusted/gio/, since it is unused

src/trusted/gio/gio_shm_unbounded.h

-/*
- * Copyright 2010 The Native Client Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-/*
- * Subclass of the gio object for use in trusted code.  Provides write
- * buffering into a shared memory object that may grow as needed.
- */
-
-#ifndef NATIVE_CLIENT_SRC_TRUSTED_GIO_WRAPPED_DESC_GIO_SHM_UNBOUNDED_H_
-#define NATIVE_CLIENT_SRC_TRUSTED_GIO_WRAPPED_DESC_GIO_SHM_UNBOUNDED_H_
-
-#include "native_client/src/include/nacl_base.h"
-
-#include "native_client/src/shared/gio/gio.h"
-
-#include "native_client/src/trusted/gio/gio_shm.h"
-
-EXTERN_C_BEGIN
-
-struct NaClGioShm;
-
-struct NaClGioShmUnbounded {
-  /* public */
-  struct Gio        base;
-  struct NaClGioShm *ngsp;
-
-  /* private */
-  size_t            shm_avail_sz;
-  size_t            shm_written;
-  size_t            io_offset;  /* deal with seeks */
-};
-
-
-/*
- * When the NaClGioShmUnbounded buffer writes are all done,
- * NaClGioShmUnboundedGetNaClDesc is used to obtain the NaClDesc
- * pointer -- caller is responsible for taking another reference with
- * NaClDescRef, if the lifetime must extend beyond that of the
- * NaClGioShmUnbounded object -- and the actual size.  Actual size is
- * the largest offset written, not number of bytes written, due to
- * Seek and the potential of overlapping Writes (or gaps).
- */
-struct NaClDesc *NaClGioShmUnboundedGetNaClDesc(
-    struct NaClGioShmUnbounded  *self,
-    size_t                      *written);
-
-
-int NaClGioShmUnboundedCtor(struct NaClGioShmUnbounded *self);
-
-
-EXTERN_C_END
-
-#endif  /* NATIVE_CLIENT_SRC_TRUSTED_GIO_WRAPPED_DESC_GIO_SHM_UNBOUNDED_H_ */