Remove old C++03 move emulation code.

net/base/file_stream_context.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 "net/base/file_stream_context.h"
 
+#include <utility>
+
 #include "base/files/file_path.h"
 #include "base/location.h"
 #include "base/profiler/scoped_tracker.h"
 #include "base/task_runner.h"
 #include "base/task_runner_util.h"
 #include "base/threading/thread_restrictions.h"
 #include "base/values.h"
 #include "net/base/net_errors.h"
 
 #if defined(OS_ANDROID)
@@ skipping 30 matching lines @@
 
 FileStream::Context::OpenResult::OpenResult() {
 }
 
 FileStream::Context::OpenResult::OpenResult(base::File file,
                                             IOResult error_code)
     : file(file.Pass()),
       error_code(error_code) {
 }
 
-FileStream::Context::OpenResult::OpenResult(RValue other)
-    : file(other.object->file.Pass()),
-      error_code(other.object->error_code) {
-}
+FileStream::Context::OpenResult::OpenResult(OpenResult&& other)
+    : file(std::move(other.file)), error_code(other.error_code) {}
 
 FileStream::Context::OpenResult& FileStream::Context::OpenResult::operator=(
-    RValue other) {
-  if (this != other.object) {
-    file = other.object->file.Pass();
-    error_code = other.object->error_code;
-  }
+    OpenResult&& other) {
+  file = std::move(other.file);
+  error_code = other.error_code;
   return *this;
 }
 
 // ---------------------------------------------------------------------
 
 void FileStream::Context::Orphan() {
   DCHECK(!orphaned_);
 
   orphaned_ = true;
 
@@ skipping 155 matching lines @@
   // should be reset before Close() because it shouldn't run if any async
   // operation is in progress.
   async_in_progress_ = false;
   if (orphaned_)
     CloseAndDelete();
   else
     callback.Run(result.result);
 }
 
 }  // namespace net