Add PlatformWindow/Event related code for Ozone X11.

ui/ozone/platform/x11/x11_window_host_manager.h

Index: ui/ozone/platform/x11/x11_window_host_manager.h
diff --git a/ui/ozone/platform/x11/x11_window_host_manager.h b/ui/ozone/platform/x11/x11_window_host_manager.h
new file mode 100644
index 0000000000000000000000000000000000000000..fb2ffc22771db21ef0a12e4ca3021056ee7cb432
--- /dev/null
+++ b/ui/ozone/platform/x11/x11_window_host_manager.h
@@ -0,0 +1,48 @@
+// 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.
+
+#ifndef UI_OZONE_PLATFORM_X11_X11_WINDOW_HOST_MANAGER_H_
+#define UI_OZONE_PLATFORM_X11_X11_WINDOW_HOST_MANAGER_H_
+
+#include <map>
+
+#include "base/callback.h"
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+
+typedef unsigned long XID;
+
+namespace ui {
+
+class PlatformWindowDelegate;
+class X11WindowHost;
+using WindowStatusCallback = base::Callback<void(XID, X11WindowHost*)>;
+
+// Manages X11WindowHosts and holds map from XID to X11WindowHost.
+class X11WindowHostManager : public base::RefCounted<X11WindowHostManager> {

[spang, 2016/01/20 19:53:31]

X11WindowManager[Ozone] ?

[kylechar, 2016/01/20 21:46:16]

Done.

+ public:
+  X11WindowHostManager();
+
+  // Creates a new X11WindowHost.
+  scoped_ptr<X11WindowHost> CreatePlatformWindow(
+      PlatformWindowDelegate* delegate);
+
+  // Returns the window that corresponds to the XID or nullptr if not found.
+  X11WindowHost* FindWindow(XID id);
+
+ private:
+  friend class base::RefCounted<X11WindowHostManager>;
+  virtual ~X11WindowHostManager();
+
+  void OnWindowCreate(XID id, X11WindowHost* window);
+  void OnWindowDestroy(XID id, X11WindowHost* window);
+
+  std::map<XID, X11WindowHost*> window_map_;
+
+  DISALLOW_COPY_AND_ASSIGN(X11WindowHostManager);
+};
+
+}  // namespace ui
+
+#endif  // UI_OZONE_PLATFORM_X11_X11_WINDOW_HOST_MANAGER_H_