Add window manager component.

wm/foreign_window.h

Index: wm/foreign_window.h
diff --git a/wm/foreign_window.h b/wm/foreign_window.h
new file mode 100644
index 0000000000000000000000000000000000000000..6ef349312fe9eed8ea5edb053a02fdbb16d18e74
--- /dev/null
+++ b/wm/foreign_window.h
@@ -0,0 +1,102 @@
+// 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_H_
+#define WM_FOREIGN_WINDOW_H_
+
+#include "base/memory/ref_counted.h"
+#include "ui/views/widget/widget_delegate.h"
+#include "wm/host/foreign_window_host_delegate.h"
+
+namespace views {
+class ClientView;
+}
+
+namespace wm {
+class ForeignWindowClientView;
+class ForeignWindowHost;
+
+class ForeignWindow : public base::RefCounted<ForeignWindow>,
+                      public ForeignWindowHostDelegate,
+                      public views::WidgetDelegate {
+ public:
+  enum DisplayState {
+    DISPLAY_NORMAL,
+    DISPLAY_ICONIC,
+    DISPLAY_WITHDRAWN
+  };
+  struct CreateParams {
+    CreateParams(gfx::PluginWindowHandle window_handle,
+                 gfx::Size preferred_size);
+
+    gfx::PluginWindowHandle window_handle;
+    gfx::Size preferred_size;
+  };
+  explicit ForeignWindow(const CreateParams& params);
+
+  // Retrieves the ForeignWindow implementation associated with the
+  // given NativeView, or NULL if the supplied handle has no associated
+  // ForeignWindow.
+  static ForeignWindow* GetForeignWindowForNativeView(
+      gfx::NativeView native_view);
+
+  // Overridden from wm::ForeignWindowHostDelegate:
+  virtual void OnWindowContentsChanged() OVERRIDE;
+
+  // Overridden from views::WidgetDelegate:
+  virtual views::Widget* GetWidget() OVERRIDE;
+  virtual const views::Widget* GetWidget() const OVERRIDE;
+  virtual views::ClientView* CreateClientView(views::Widget* widget) OVERRIDE;
+  virtual void DeleteDelegate() OVERRIDE;
+  virtual bool CanResize() const OVERRIDE;
+  virtual bool CanMaximize() const OVERRIDE;
+  virtual bool CanActivate() const OVERRIDE;
+
+  // Called by widget. Attempts to close the foreign window.
+  void Close();
+
+  // Create a new views::WidgetDelegate.
+  views::WidgetDelegate* CreateWidgetDelegate();
+
+  // Returns the window handle.
+  gfx::PluginWindowHandle GetWindowHandle() const;
+
+  // Returns the native view.
+  gfx::NativeView GetNativeView() const;
+
+  // Set foreign window display state.
+  void SetDisplayState(DisplayState state);
+  DisplayState GetDisplayState() const;
+
+  // Returns true if foreign window is managed.
+  bool IsManaged() const;
+
+  // Returns true if foreign window handle has been destroyed.
+  bool HasBeenDestroyed() const;
+
+  // Called when foreign window size has changed.
+  void OnWindowSizeChanged(const gfx::Size& size);
+
+  // Called when foreign window visibility has changed.
+  void OnWindowVisibilityChanged(bool visible);
+
+  // Called when foreign window has been destroyed.
+  void OnWindowDestroyed();
+
+ private:
+  friend class base::RefCounted<ForeignWindow>;
+  virtual ~ForeignWindow();
+
+  scoped_ptr<ForeignWindowHost> host_;
+  gfx::Size preferred_size_;
+  base::WeakPtr<ForeignWindowClientView> client_view_;
+  DisplayState display_state_;
+  bool destroyed_;
+
+  DISALLOW_COPY_AND_ASSIGN(ForeignWindow);
+};
+
+}  // namespace wm
+
+#endif  // WM_FOREIGN_WINDOW_H_