Fix some grammatical errors in native_client_sdk/

native_client_sdk/src/build_tools/debug_server/gdb_rsp/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.
  */
 
 //  This module provides an object for handling RSP responsibilities of
 //  the host side of the connection.  The host behaves like a cache, and
 //  is responsible for syncronization of state between the Target and Host.
 //  For example, the Host is responsible for updating the thread context
-//  before restarting the Target, and for updating it's internal array of
+//  before restarting the Target, and for updating its internal array of
 //  threads whenever the Target stops.
 
 #ifndef NATIVE_CLIENT_GDB_RSP_HOST_H_
 #define NATIVE_CLIENT_GDB_RSP_HOST_H_ 1
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "native_client/src/debug_server/port/std_types.h"
@@ skipping 118 matching lines @@
   ThreadMap_t threads_;
   int32_t lastSignal_;
   Status  status_;
 };
 
 
 }  // namespace gdb_rsp
 
 #endif  // NATIVE_CLIENT_GDB_RSP_HOST_H_