[NaCl SDK] Refactor STATUSCODE_*

Move "STATUSCODE_OK, STATUSCODE_PARTIAL_CONTENT, STATUSCODE_FORBIDDEN,
STATUSCODE_NOT_FOUND, STATUSCODE_REQUESTED_RANGE_NOT_SATISFIABLE' from
http_fs_node.cc to http_status_codes.h to share the codes with the
future functionalities exposed to nacl_io.

CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_nacl_sdk;master.tryserver.chromium.mac:mac_nacl_sdk;master.tryserver.chromium.win:win_nacl_sdk

Review-Url: https://codereview.chromium.org/2518593002
Cr-Commit-Position: refs/heads/master@{#433413}

native_client_sdk/src/libraries/nacl_io/http_status_codes.h

@@ -0,0 +1,18 @@
+// Copyright 2016 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 LIBRARIES_NACL_IO_HTTP_STATUS_CODES_H_
+#define LIBRARIES_NACL_IO_HTTP_STATUS_CODES_H_
+
+namespace nacl_io {
+
+const int32_t STATUSCODE_OK = 200;
+const int32_t STATUSCODE_PARTIAL_CONTENT = 206;
+const int32_t STATUSCODE_FORBIDDEN = 403;
+const int32_t STATUSCODE_NOT_FOUND = 404;
+const int32_t STATUSCODE_REQUESTED_RANGE_NOT_SATISFIABLE = 416;
+
+}  // namespace nacl_io
+
+#endif  // LIBRARIES_NACL_IO_HTTP_STATUS_CODES_H_

native_client_sdk/src/libraries/nacl_io/httpfs/http_fs_node.cc

@@ -12,6 +12,7 @@
 #include <ppapi/c/pp_errors.h>
 
 #include "nacl_io/httpfs/http_fs.h"
+#include "nacl_io/http_status_codes.h"
 #include "nacl_io/kernel_handle.h"
 #include "nacl_io/osinttypes.h"
 
@@ -27,11 +28,6 @@ namespace {
 // request, we need to read all of the data up to the start of our partial
 // request into a dummy buffer. This is the maximum size of that buffer.
 const int MAX_READ_BUFFER_SIZE = 64 * 1024;
-const int32_t STATUSCODE_OK = 200;
-const int32_t STATUSCODE_PARTIAL_CONTENT = 206;
-const int32_t STATUSCODE_FORBIDDEN = 403;
-const int32_t STATUSCODE_NOT_FOUND = 404;
-const int32_t STATUSCODE_REQUESTED_RANGE_NOT_SATISFIABLE = 416;
 
 StringMap_t ParseHeaders(const char* headers, int32_t headers_length) {
   enum State {

native_client_sdk/src/libraries/nacl_io/library.dsc

@@ -174,6 +174,7 @@
         "html5fs/html5_fs_node.h",
         "httpfs/http_fs.h",
         "httpfs/http_fs_node.h",
+        "http_status_codes.h",
         "inode_pool.h",
         "ioctl.h",
         "jsfs/js_fs.h",