Remove old C++03 move emulation code.

net/base/file_stream_context.cc

Index: net/base/file_stream_context.cc
diff --git a/net/base/file_stream_context.cc b/net/base/file_stream_context.cc
index 3ddf4bbf508ea596c6be81c0eb6b4e70a807149f..31e676fb480d67aeb3b9c4e0e713131e841540de 100644
--- a/net/base/file_stream_context.cc
+++ b/net/base/file_stream_context.cc
@@ -54,17 +54,13 @@ FileStream::Context::OpenResult::OpenResult(base::File file,
       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(other.file.Pass()), 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 = other.file.Pass();
+  error_code = other.error_code;
   return *this;
 }