Add window manager component.

wm/host/foreign_window_host_linux.h

Index: wm/host/foreign_window_host_linux.h
diff --git a/wm/host/foreign_window_host_linux.h b/wm/host/foreign_window_host_linux.h
new file mode 100644
index 0000000000000000000000000000000000000000..d64a968a70f97cf618ac450de13b1b852a5b7206
--- /dev/null
+++ b/wm/host/foreign_window_host_linux.h
@@ -0,0 +1,43 @@
+// Copyright (c) 2013 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 WM_FOREIGN_WINDOW_HOST_LINUX_H_
+#define WM_FOREIGN_WINDOW_HOST_LINUX_H_
+
+#include <X11/Xlib.h>
+
+// Get rid of a macro from Xlib.h that conflicts with Aura's RootWindow class.
+#undef RootWindow
+
+#include "base/message_loop.h"
+#include "wm/host/foreign_window_host.h"
+
+namespace wm {
+
+class ForeignWindowHostLinux : public ForeignWindowHost,
+                               public MessageLoop::Dispatcher {
+ public:
+  explicit ForeignWindowHostLinux(gfx::PluginWindowHandle window_handle);
+  virtual ~ForeignWindowHostLinux();
+
+  // Overridden from wm::ForeignWindowHost:
+  virtual void SetDelegate(ForeignWindowHostDelegate* delegate) OVERRIDE;
+  virtual gfx::PluginWindowHandle GetWindowHandle() const OVERRIDE;
+  virtual void Close() OVERRIDE;
+  virtual void OnWindowDestroyed() OVERRIDE;
+
+  // Overridden from Dispatcher:
+  virtual bool Dispatch(const base::NativeEvent& event) OVERRIDE;
+
+ private:
+  Display* xdisplay_;
+  gfx::PluginWindowHandle window_handle_;
+  ForeignWindowHostDelegate* delegate_;
+
+  DISALLOW_COPY_AND_ASSIGN(ForeignWindowHostLinux);
+};
+
+}  // namespace wm
+
+#endif  // WM_FOREIGN_WINDOW_HOST_LINUX_H_