WIP: Reduce code size of InterfacePtrState

mojo/public/cpp/bindings/interface_ptr_info.cc

+// 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.
+
+#include "mojo/public/cpp/bindings/interface_ptr_info.h"
+
+namespace mojo {
+
+InterfacePtrInfoBase::InterfacePtrInfoBase() : version_(0u) {}
+
+InterfacePtrInfoBase::InterfacePtrInfoBase(ScopedMessagePipeHandle handle,
+                                           uint32_t version)
+    : handle_(std::move(handle)), version_(version) {}
+
+InterfacePtrInfoBase::InterfacePtrInfoBase(InterfacePtrInfoBase&& other)
+    : handle_(std::move(other.handle_)), version_(other.version_) {
+  other.version_ = 0u;
+}
+
+InterfacePtrInfoBase::~InterfacePtrInfoBase() {}
+
+InterfacePtrInfoBase& InterfacePtrInfoBase::operator=(
+    InterfacePtrInfoBase&& other) {
+  if (this != &other) {
+    handle_ = std::move(other.handle_);
+    version_ = other.version_;
+    other.version_ = 0u;
+  }
+
+  return *this;
+}
+
+}  // namespace mojo