Add PlatformWindow/Event related code for Ozone X11.

ui/ozone/platform/x11/x11_window_host_manager.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 "ui/ozone/platform/x11/x11_window_host_manager.h"
+
+#include "base/bind.h"
+#include "base/logging.h"
+#include "ui/ozone/platform/x11/x11_window_host.h"
+
+namespace ui {
+
+X11WindowHostManager::X11WindowHostManager() {}
+
+X11WindowHostManager::~X11WindowHostManager() {}
+
+scoped_ptr<X11WindowHost> X11WindowHostManager::CreatePlatformWindow(
+    PlatformWindowDelegate* delegate) {
+  return make_scoped_ptr(new X11WindowHost(
+      delegate, base::Bind(&X11WindowHostManager::OnWindowCreate, this),
+      base::Bind(&X11WindowHostManager::OnWindowDestroy, this)));
+}
+
+X11WindowHost* X11WindowHostManager::FindWindow(XID id) {
+  auto iter = window_map_.find(id);
+  if (iter == window_map_.end())
+    return nullptr;
+  return iter->second;
+}
+
+void X11WindowHostManager::OnWindowCreate(XID id, X11WindowHost* window) {
+  window_map_[id] = window;
+}
+
+void X11WindowHostManager::OnWindowDestroy(XID id, X11WindowHost* window) {
+  window_map_.erase(id);
+}
+
+}  // namespace ui