[NaCl SDK] Add HTTP mount.

native_client_sdk/src/libraries/nacl_mounts/pepper_interface.cc

 /* 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.
  */
 #include "nacl_mounts/pepper_interface.h"
 #include <errno.h>
 #include <ppapi/c/pp_errors.h>
 
 ScopedResource::ScopedResource(PepperInterface* ppapi, PP_Resource resource)
     : ppapi_(ppapi),
       resource_(resource) {
-  ppapi_->AddRefResource(resource_);
-}
-
-ScopedResource::ScopedResource(PepperInterface* ppapi, PP_Resource resource,
-                               NoAddRef)
-    : ppapi_(ppapi),
-      resource_(resource) {
 }
 
 ScopedResource::~ScopedResource() {
-  ppapi_->ReleaseResource(resource_);
+  if (resource_)
+    ppapi_->ReleaseResource(resource_);
+}
+
+PP_Resource ScopedResource::Release() {
+  PP_Resource result = resource_;
+  resource_ = 0;
+  return result;
 }
 
 int PPErrorToErrno(int32_t err) {
   switch (err) {
     case PP_OK: return 0;
     case PP_OK_COMPLETIONPENDING: return 0;
     case PP_ERROR_FAILED: return EPERM;
     case PP_ERROR_ABORTED: return EPERM;
     case PP_ERROR_BADARGUMENT: return EINVAL;
     case PP_ERROR_BADRESOURCE: return EBADF;
@@ skipping 13 matching lines @@
     case PP_ERROR_USERCANCEL: return EPERM;
     case PP_ERROR_NO_USER_GESTURE: return EPERM;
     case PP_ERROR_CONTEXT_LOST: return EPERM;
     case PP_ERROR_NO_MESSAGE_LOOP: return EPERM;
     case PP_ERROR_WRONG_THREAD: return EPERM;
   }
 
   return EINVAL;
 }